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    254 Products
    About Pipe and Fittings
    industrial info icon

    Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

    Low-Pressure Iron and Steel Unthreaded Pipe Flanges

    Bolt two flat-surface flanges or two raised-surface flanges of the same size together with a gasket (sold separately) to create an access point in a pipe line. Flanges are for use with low-pressure applications in noncorrosive environments.
    Flanges
    Image of System. Stub-End Flange with Straight Adapter: Front. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Stub-End Female, Flat Surface.

    Stub-End Flange with Straight

    Adapter: Front

    Image of Product. Butt Weld: Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Butt Weld, Raised Surface.
    Image of Product. Butt Weld: Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Butt Weld, Raised Surface.
    Image of Product. Slip-On Weld: Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Slip-On Weld Female, Raised Surface.
    Image of Product. Slip-On Weld: Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Slip-On Weld Female, Raised Surface.
    Image of Product. Socket Connect: Front. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Socket-Connect Female, Raised Surface.
    Image of Product. Socket Connect: Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Socket-Connect Female, Raised Surface.
    Image of Product. Stub End: Flat Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Flanges, Stub-End Female, Flat Surface.

    Butt Weld:

    Front

    Butt

    Weld:

    Raised

    Surface

    on Back

    Slip-On

    Weld:

    Front

    Slip-On

    Weld:

    Raised

    Surface

    on Back

    Socket Connect:

    Front

    Socket

    Connect:

    Raised

    Surface

    on Back

    Stub End:

    Flat

    Surface

    on Back

    Butt-Weld Fitting Connection—Butt-weld flanges are also known as weld-neck flanges; the flange neck has a beveled end that, when flush to pipe, creates a trough for a strong weld.
    Slip-on-Weld Fitting Connection—Slip-on weld flanges have no internal stop; slide a pipe through the flange and weld on both sides.
    Stub-End Fitting Connection—Stub-end flanges are also known as lap-joint flanges. Use them with a stub-end straight adapter (not included). The stub-end straight adapter slides into the flange and welds to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily for frequent cleaning and inspecting.
    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Butt Weld
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K415000000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36400000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36500000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36700000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36800000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36900000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37100000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37200000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37300000
    5
    		5
    		Raised10"3/4"7/8"88 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K41300000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37400000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K414000000
    10
    		10
    		Raised16"7/8"1"1214 1/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K57000000
    12
    		12
    		Raised19"7/8"1"1217"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K58000000
     
    Slip-On Weld Female
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39800000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34400000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34500000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34600000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34700000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34800000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K34900000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35100000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35200000
    5
    		5
    		Raised10"3/4"7/8"88 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39600000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35300000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K397000000
    10
    		10
    		Raised16"7/8"1"1214 1/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K53000000
    12
    		12
    		Raised19"7/8"1"1217"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K54000000
     
    Socket-Connect Female
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K41200000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35400000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35500000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35600000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35700000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35800000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K35900000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36100000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36200000
    5
    		5
    		Raised10"3/4"7/8"88 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39900000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K36300000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K411000000
     
    Stub-End Female
    1/2
    		1/2
    		Flat3 1/2"1/2"5/8"42 3/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K42200000
    3/4
    		3/4
    		Flat3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38500000
    1
    		1
    		Flat4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38600000
    1 1/4
    		1 1/4
    		Flat4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38700000
    1 1/2
    		1 1/2
    		Flat5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38800000
    2
    		2
    		Flat6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38900000
    2 1/2
    		2 1/2
    		Flat7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39100000
    3
    		3
    		Flat7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39200000
    4
    		4
    		Flat9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39300000
    5
    		5
    		Flat10"3/4"7/8"88 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K41900000
    6
    		6
    		Flat11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K39400000
    8
    		8
    		Flat13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K421000000
    10
    		10
    		Flat16"7/8"1"1214 1/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K55000000
    12
    		12
    		Flat19"7/8"1"1217"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K56000000
     
    Long-Neck Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Long-Neck Flanges, Butt Weld, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Long-Neck Flanges, Butt Weld, Raised Surface.

    Front

    Raised Surface on

    Back

    Long-neck weld flanges have a square-cut end for welding directly to a pressure vessel or tank. With a longer neck than butt-weld flanges, they stick out farther from your tank wall for easier access to bolts. These flanges eliminate the need to weld a flange to a length of pipe.
    Butt-Weld Fitting Connection—Butt-weld flanges are also known as weld-neck flanges; the flange neck has a beveled end that, when flush to pipe, creates a trough for a strong weld.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Butt Weld
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K1810000000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K182000000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K183000000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K184000000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K185000000
    6
    		6
    		Raised11"3/4"1"89 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K186000000
     
    Reducing Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Reducing Flanges, Slip-On Weld Female, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Reducing Flanges, Slip-On Weld Female, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Reducing flanges allow you to transition your system to a smaller pipe size; attach to a flange with a larger pipe size but with the same flange dimensions.
    Slip-on-Weld Fitting Connection—Slip-on weld flanges have no internal stop; slide a pipe through the flange and weld on both sides.
    Bolt
    Hole
    Pipe Size
    (A)
    For Flange
    Pipe Size (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Slip-On Weld Female
    3/4
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K187000000
    1
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K18800000
    1
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K18900000
    2
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K191000000
     
    Blind Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Blind Flanges, Flanged, Raised.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Unthreaded Pipe Flanges, Blind Flanges, Flanged, Raised.

    Front

    Raised

    Surface

    on Back

    Bolt
    Hole
    Pipe
    Size
    Flanged Connection
    Surface
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Flanged
    1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K418000000
    3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37500000
    1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37600000
    1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37700000
    1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37800000
    2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K37900000
    2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38100000
    3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38200000
    4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38300000
    5
    		Raised10"3/4"7/8"88 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K41600000
    6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K38400000
    8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K417000000
    10
    		Raised16"7/8"1"1214 1/4"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K59000000
    12
    		Raised19"7/8"1"1217"150
    		Steel
    		285 psi @ 72° F150 psi @ 300° F68095K61000000
     
    Stub-End Straight Adapters
    Image of Product. Straight Adapter. Front orientation. Pipe Stub Ends. Low-Pressure Iron and Steel Unthreaded Pipe Flanges.

    Straight Adapter

    Stub-end straight adapters are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.
    Pipe
    Size
    Flange
    OD
    Construction
    Pipe
    Schedule
    Finished
    Material
    Each
    1/2
    		1 3/8"Seamless40
    		Steel
    		43425K115000000
    3/4
    		1 11/16"Seamless40
    		Steel
    		43425K12500000
    1
    		2"Seamless40
    		Steel
    		43425K13500000
    1 1/4
    		2 1/2"Seamless40
    		Steel
    		43425K145000000
    1 1/2
    		2 7/8"Seamless40
    		Steel
    		43425K155000000
    2
    		3 5/8"Seamless40
    		Steel
    		43425K165000000
    2 1/2
    		4 1/8"Seamless40
    		Steel
    		43425K175000000
    3
    		5"Seamless40
    		Steel
    		43425K185000000
    4
    		6 3/16"Seamless40
    		Steel
    		43425K215000000
    6
    		8 1/2"Seamless40
    		Steel
    		43425K235000000
    8
    		10 5/8"Seamless40
    		Steel
    		43425K245000000

    Low-Pressure Iron and Steel Threaded Pipe Flanges

    Use these flanges for low-pressure applications in noncorrosive environments. Bolt two flanges of the same size together with a gasket (sold separately) to create an access point within a line.
    Forged Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Flanges, Forged Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Flanges, Forged Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Forged flanges have better strength than cast flanges.
    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K226000000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12100000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12200000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12300000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12400000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12500000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12600000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12700000
    3 1/2
    		3 1/2
    		Raised8 1/2"5/8"3/4"87"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K444000000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12800000
    5
    		5
    		Raised10"3/4"7/8"88 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K22200000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K12900000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F68095K223000000
     
    Forged Reducing Flanges
    Image of ProductInUse. Reducing Flange. Side1 orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Flanges, Forged Reducing Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Flanges, Forged Reducing Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Flanges, Forged Reducing Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.

    Reducing

    Flange

    Raised

    Surface on

    Back

    Front

    Forged flanges have better strength than cast flanges.
    Reducing flanges allow you to transition your system to a smaller pipe size; attach to a flange with a larger pipe size but with the same flange dimensions.
    Bolt
    Hole
    Pipe Size
    (A)
    For Flange
    Pipe Size (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/4
    		1
    		Raised4 1/4"1/2"5/8"43.12"150
    		Steel
    		Not Rated—1802N11000000
    1/2
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N2900000
    1/2
    		1
    		Raised4 1/4"1/2"5/8"43.12"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N1200000
    1/2
    		1 1/2
    		Raised5"1/2"5/8"43.88"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N3100000
    1/2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N18000000
    1/2
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N41000000
    1/2
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N47000000
    3/4
    		1
    		Raised4 1/4"1/2"5/8"43.12"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N1300000
    3/4
    		1 1/2
    		Raised5"1/2"5/8"43.88"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N1500000
    3/4
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N19000000
    3/4
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N39000000
    3/4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N46000000
    1
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N14000000
    1
    		1 1/2
    		Raised5"1/2"5/8"43.88"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N1600000
    1
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N21000000
    1
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N34000000
    1
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N38000000
    1
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N45000000
    1 1/4
    		1 1/2
    		Raised5"1/2"5/8"43.88"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N1700000
    1 1/4
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N22000000
    1 1/4
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N37000000
    1 1/4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N44000000
    1 1/2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N23000000
    1 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N32000000
    1 1/2
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N36000000
    1 1/2
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N43000000
    2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N24000000
    2
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N25000000
    2
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N26000000
    2
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F8128K102000000
    2 1/2
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N35000000
    2 1/2
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N42000000
    3
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N27000000
    3
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F8128K101000000
    4
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N28000000
    5
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N48000000
    6
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Steel
    		285 psi @ 72° F230 psi @ 300° F1802N49000000
     

    High-Pressure Iron and Steel Threaded Pipe Flanges

    With better strength than our low-pressure steel flanges, these are for use in high-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges are also known as Pressure Class 300 or Pressure Class 600 flanges. Use in noncorrosive environments.
    Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Flanges, Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Flanges, Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/2
    		1/2
    		Raised3 3/4"1/2"5/8"42 5/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K226000000
    3/4
    		3/4
    		Raised4 5/8"5/8"3/4"43 1/4"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K12100000
    1
    		1
    		Raised4 7/8"5/8"3/4"43 1/2"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K12200000
    1
    		1
    		Raised4 7/8"3/4"3/4"43 1/2"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K42200000
    1 1/4
    		1 1/4
    		Raised5 1/4"5/8"3/4"43 7/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K12300000
    1 1/2
    		1 1/2
    		Raised6 1/8"3/4"7/8"44 1/2"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K12400000
    1 1/2
    		1 1/2
    		Raised6 1/8"7/8"0.88"44 1/2"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K42300000
    2
    		2
    		Raised6 1/2"5/8"3/4"85"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K12500000
    2
    		2
    		Raised6 1/2"3/4"3/4"85"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K42400000
    2 1/2
    		2 1/2
    		Raised7 1/2"3/4"7/8"85 7/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K12600000
    3
    		3
    		Raised8 1/4"3/4"7/8"86 5/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K12700000
    3
    		3
    		Raised8 1/4"7/8"0.88"86.62"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K425000000
    4
    		4
    		Raised10"3/4"7/8"87 7/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K12800000
    4
    		4
    		Raised10 3/4"1"1"88 1/2"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K426000000
    5
    		5
    		Raised11"3/4"7/8"89 1/4"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K222000000
    6
    		6
    		Raised12 1/2"3/4"7/8"1210 5/8"300
    		Steel
    		600 psi @ 72° F300 psi @ 300° F6806K129000000
    6
    		6
    		Raised14"1 1/8"1.12"1211 1/2"600
    		Steel
    		1,400 psi @ 72° F1,300 psi @ 300° F6806K427000000
     

    Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

    The galvanized finish on these flanges provides fair corrosion resistance. Also known as Pressure Class 150 flanges, they are for use in low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.
    Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/2
    		1/2
    		Raised3 1/2"1/2"5/8"42 3/8"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K119000000
    3/4
    		3/4
    		Raised3 7/8"1/2"5/8"42 3/4"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12100000
    1
    		1
    		Raised4 1/4"1/2"5/8"43 1/8"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12200000
    1 1/4
    		1 1/4
    		Raised4 5/8"1/2"5/8"43 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12300000
    1 1/2
    		1 1/2
    		Raised5"1/2"5/8"43 7/8"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12400000
    2
    		2
    		Raised6"5/8"3/4"44 3/4"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12500000
    2 1/2
    		2 1/2
    		Raised7"5/8"3/4"45 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12600000
    3
    		3
    		Raised7 1/2"5/8"3/4"46"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K12700000
    4
    		4
    		Raised9"5/8"3/4"87 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K128000000
    5
    		5
    		Raised10"3/4"7/8"88 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K129000000
    6
    		6
    		Raised11"3/4"7/8"89 1/2"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K131000000
    8
    		8
    		Raised13 1/2"3/4"7/8"811 3/4"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F7551K133000000
     
    BSPT Female
    2
    		2
    		Raised6"3/4"3/4"44 3/4"150
    		Galvanized Steel285 psi @ 72° F150 psi @ 300° F1584N5000000
     

    FM-Approved Low-Pressure Iron and Steel Unthreaded Pipe Flanges

    FM-approved for fire protection applications, these flanges are cast iron, so they're brittle and can be quickly opened by hitting them with a sledge hammer. Bolt them together with a gasket (not included) to create an access point within a low-pressure pipe line. All are cap flanges, which are also known as blind flanges. Use them in noncorrosive environments.
    Cast Blind Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. FM-Approved Low-Pressure Iron and Steel Unthreaded Pipe Flanges.
    Image of Product. Back. Back orientation. Pipe and Fittings. FM-Approved Low-Pressure Iron and Steel Unthreaded Pipe Flanges.

    Front

    Back

    Cast flanges are also called MSS flanges.
    Bolt
    Hole
    Pipe
    Size
    Flanged Connection
    Surface
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Certification
    Each
    Flanged
    1
    		Flat4 1/4"1/2"5/8"43 1/8"125
    		Cast Iron200 psi @ 72° F165 psi @ 300° FFM Approved
    		4824N11000000
    1 1/2
    		Flat5"1/2"5/8"43 7/8"125
    		Cast Iron200 psi @ 72° F165 psi @ 300° FFM Approved
    		4824N1200000
    2
    		Flat6"5/8"3/4"44 3/4"125
    		Cast Iron200 psi @ 72° F165 psi @ 300° FFM Approved
    		4824N1300000
    2 1/2
    		Flat7"5/8"3/4"45 1/2"125
    		Cast Iron200 psi @ 72° F165 psi @ 300° FFM Approved
    		4824N1400000
    3
    		Flat7 1/2"5/8"3/4"46"125
    		Cast Iron200 psi @ 72° F165 psi @ 300° FFM Approved
    		4824N1500000
    3 1/2
    		Flat8 1/2"5/8"3/4"87"125
    		Cast Iron200 psi @ 72° F165 psi @ 300° FFM Approved
    		4824N16000000
    4
    		Flat9"5/8"3/4"87 1/2"125
    		Cast Iron200 psi @ 72° F165 psi @ 300° FFM Approved
    		4824N17000000
    6
    		Flat11"3/4"7/8"89 1/2"125
    		Cast Iron200 psi @ 72° F165 psi @ 300° FFM Approved
    		4824N18000000
     

    FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges

    Suitable for use in fire-protection applications, these flanges are brittle and can be quickly opened with the strike of a sledge hammer. Bolt two flanges of the same size together with a gasket (sold separately) to create an access point within a line. Use in noncorrosive environments.
    Cast Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges, Cast Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Flat Surface.

    Front

    Cast flanges are also called MSS flanges.
    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Certification
    Each
    NPT Female
    3/4
    		3/4
    		Flat3 7/8"1/2"5/8"42 3/4"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved
    		68185K111000000
    1
    		1
    		Flat4 1/4"1/2"5/8"43 1/8"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K11200000
    1 1/4
    		1 1/4
    		Flat4 5/8"1/2"5/8"43 1/2"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K11300000
    1 1/2
    		1 1/2
    		Flat5"1/2"5/8"43 7/8"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K11400000
    2
    		2
    		Flat6"5/8"3/4"44 3/4"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K11500000
    2 1/2
    		2 1/2
    		Flat7"5/8"3/4"45 1/2"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K11600000
    3
    		3
    		Flat7 1/2"5/8"3/4"46"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K11700000
    4
    		4
    		Flat9"5/8"3/4"87 1/2"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K118000000
    5
    		5
    		Flat10"3/4"7/8"88 1/2"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K131000000
    6
    		6
    		Flat11"3/4"7/8"89 1/2"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K132000000
    8
    		8
    		Flat13 1/2"3/4"7/8"811 3/4"Cast Iron125 psi @ 72° F125 psi @ 350° FFM Approved, UL Listed
    		68185K133000000
     
    Cast Reducing Flanges
    Image of ProductInUse. Reducing Flange. Side1 orientation. Contains Annotated. Pipe and Fittings. FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges, Cast Reducing Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Flat Surface.
    Image of Product. Front. Front orientation. Pipe and Fittings. FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges, Cast Reducing Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Flat Surface.

    Reducing

    Flange

    Front

    Cast flanges are also called MSS flanges.
    Reducing flanges allow you to transition your system to a smaller pipe size; attach to a flange with a larger pipe size but with the same flange dimensions.
    Bolt
    Hole
    Pipe Size
    (A)
    For Flange
    Pipe Size (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Certification
    Each
    NPT Female
    2
    		2 1/2
    		Flat7"5/8"3/4"45 1/2"Cast Iron175 psi @ 72° F125 psi @ 350° FFM Approved
    		68185K1010000000
    2
    		3
    		Flat7 1/2"5/8"3/4"46"Cast Iron175 psi @ 72° F125 psi @ 350° FFM Approved
    		68185K102000000
    2
    		4
    		Flat9"5/8"3/4"87 1/2"Cast Iron175 psi @ 72° F125 psi @ 350° FFM Approved
    		68185K103000000
    3
    		4
    		Flat9"5/8"3/4"87 1/2"Cast Iron175 psi @ 72° F125 psi @ 350° FFM Approved
    		68185K104000000
    4
    		6
    		Flat11"3/4"7/8"89 1/2"Cast Iron175 psi @ 72° F125 psi @ 350° FFM Approved
    		68185K105000000
     

    Extreme-Pressure Iron and Steel Threaded Pipe Flanges

    Also known as Pressure Class 1500 flanges, these have the strength to handle high pressures. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges are for use in noncorrosive environments.
    Forged Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. Extreme-Pressure Iron and Steel Threaded Pipe Flanges, Forged Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. Extreme-Pressure Iron and Steel Threaded Pipe Flanges, Forged Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.

    Front

    Raised Surface

    on Back

    Forged flanges have better strength than cast flanges.
    Pipe
    Size
    Dash
    Size
    Bolt
    Hole
    (A)
    (B)
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1/2
    		1/2
    		0808Raised4 3/4"3/4"7/8"43 1/4"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1153T410000000
    3/4
    		3/4
    		1212Raised5 1/8"3/4"7/8"43 1/2"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1153T42000000
    1
    		1
    		1616Raised5 7/8"7/8"1"44"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1153T43000000
    1 1/4
    		1 1/4
    		2020Raised6 1/4"7/8"1"44 3/8"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1153T44000000
    1 1/2
    		1 1/2
    		2424Raised7"1"1 1/8"44 7/8"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1153T45000000
    2
    		2
    		3232Raised8 1/2"7/8"1"86 1/2"1500
    		Steel
    		3,700 psi @ 72° F3,200 psi @ 300° F1153T46000000
     

    High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

    A galvanized finish gives these flanges fair corrosion resistance. Also known as Pressure Class 300 flanges, they can withstand medium-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.
    Flanges
    Image of Product. Front. Front orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.
    Image of Product. Raised Surface on Back. Back orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges, Flanges, Female, Flanged Fitting Connection, Threaded Fitting Connection, Raised Surface.

    Front

    Raised

    Surface on

    Back

    Pipe
    Size
    Bolt
    Hole
    (A)
    (B)
    Flanged Connection
    Surface (B)
    Flange
    OD
    For Bolt
    Dia.
    Dia.
    No.
    Of
    Bolt Circle
    Dia.
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam
    Pressure @ Temp.
    Each
    NPT Female
    3/4
    		3/4
    		Raised4 5/8"3/4"3/4"43 1/4"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N120000000
    1
    		1
    		Raised4 7/8"3/4"3/4"43 1/2"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N1300000
    1 1/4
    		1 1/4
    		Raised5 1/4"3/4"3/4"43 7/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N14000000
    1 1/2
    		1 1/2
    		Raised6 1/8"7/8"0.88"44 1/2"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N1500000
    2
    		2
    		Raised6 1/2"3/4"3/4"85"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N16000000
    3
    		3
    		Raised8 1/4"7/8"0.88"86 5/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N17000000
    4
    		4
    		Raised10"7/8"0.88"87 7/8"300
    		Galvanized Steel600 psi @ 72° FNot Rated1733N18000000
     

    Low-Pressure Iron and Steel Threaded Pipe Fittings

    Use these fittings for low-pressure applications in noncorrosive environments.
    Bushing Straight Reducing Adapters
    Image of Product. Male × Female. Front orientation. Contains Annotated. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Fittings, Bushing Straight Reducing Adapters, Threaded Fitting Connection, Male, Female.

    Male × Female

    Pipe
    Size
    (A)
    (B)
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Male × NPT Female
    1/4
    		1/8
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K25600000
    3/8
    		1/8
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K3880000
    3/8
    		1/4
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2570000
    1/2
    		1/8
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2610000
    1/2
    		1/4
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2590000
    1/2
    		3/8
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2580000
    3/4
    		1/8
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K3960000
    3/4
    		1/4
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2640000
    3/4
    		3/8
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2630000
    3/4
    		1/2
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2620000
    1
    		1/4
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2680000
    1
    		3/8
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2670000
    1
    		1/2
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2660000
    1
    		3/4
    		150
    		Steel
    		150 psi @ 72° F150 psi @ 350° F44605K2650000
    1 1/4
    		3/4
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K75600000
    1 1/4
    		1
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K75500000
    1 1/2
    		3/4
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K75900000
    1 1/2
    		1
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K75800000
    1 1/2
    		1 1/4
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K75700000
    2
    		1
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K76400000
    2
    		1 1/4
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K76300000
    2
    		1 1/2
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K76200000
    2 1/2
    		1 1/4
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K76700000
    2 1/2
    		2
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K76600000
    3
    		2
    		125
    		Iron150 psi @ 72° F125 psi @ 350° F44605K76900000
    3
    		2 1/2
    		150
    		Iron150 psi @ 72° F150 psi @ 350° F44605K76800000
    4
    		3
    		125
    		Iron150 psi @ 72° F125 psi @ 350° F44605K771000000
     
    180° Bend Connectors
    Image of Product. Front orientation. Pipe Traps. Low-Pressure Iron and Steel Threaded Pipe Fittings.
    180° bend connectors are also known as U-bends.
    Pipe
    Size
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Certification
    Shape
    Each
    NPT Female
    1/2
    		Iron150 psi @ 72° F150 psi @ 350° FUL Listed
    		180° Bend44605K563000000
    3/4
    		Iron150 psi @ 72° F150 psi @ 350° FUL Listed
    		180° Bend44605K56400000
    1
    		Iron150 psi @ 72° F150 psi @ 350° F—180° Bend44605K56500000
    1 1/4
    		Iron150 psi @ 72° F150 psi @ 350° FUL Listed
    		180° Bend44605K56600000
    2
    		Iron150 psi @ 72° F150 psi @ 350° FUL Listed
    		180° Bend44605K568000000
     
    Locknuts
    Image of Product. Front orientation. Pipe Locknuts.
    NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
    Pipe
    Size
    Finished
    Material
    Max. Pressure
    @ Temp.
    Max. Steam
    Pressure @ Temp.
    Each
    NPSL Female
    1/4
    		Steel
    		Not RatedNot Rated44605K43400000
    3/8
    		IronNot RatedNot Rated44605K2110000
    1/2
    		IronNot RatedNot Rated44605K2120000
    3/4
    		IronNot RatedNot Rated44605K2130000
    1
    		IronNot RatedNot Rated44605K21400000
    1 1/4
    		IronNot RatedNot Rated44605K2150000
    1 1/2
    		IronNot RatedNot Rated44605K21600000
    2
    		IronNot RatedNot Rated44605K21700000
     

    Low-Pressure Galvanized Iron and Steel Threaded Pipe Locknuts

    Image of Product. Front orientation. Pipe Locknuts. Low-Pressure Galvanized Iron and Steel Threaded Pipe Locknuts.
    The galvanized finish on these locknuts provides fair corrosion resistance. Locknuts are for use in low-pressure applications.
    Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.
    NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
    For Pipe
    For
    Flange
    Pipe
    Size
    Hex Wd.
    Lg.
    Max. Pressure
    @ Temp.
    Max. Steam
    Pressure @ Temp.
    For Use With
    Pressure
    Class
    Material
    Schedule
    Material
    Class
    Material
    Specs. Met
    Each
    NPSL Female
    1/4
    		27/32"1/4"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61200000
    3/8
    		1"0.28"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K6130000
    1/2
    		1 3/16"0.31"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K6140000
    3/4
    		1 7/16"0.34"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K6150000
    1
    		1 3/4"0.38"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61600000
    1 1/4
    		2 3/32"0.42"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61700000
    1 1/2
    		2 11/32"0.47"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61800000
    2
    		2 7/8"0.53"Not RatedNot RatedAir, Natural Gas, Oil, Steam, Water150
    		Galvanized Iron40
    		Galvanized Steel150
    		Galvanized SteelASME B16.144638K61900000
     
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