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    86 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.

    Fitting Type

    Union
    Union
    Separate into three pieces to access lines without disassembling completely
    0 products

    Low-Pressure Iron and Steel Threaded Pipe Fittings

    Use these fittings for low-pressure applications in noncorrosive environments.
    Straight Adapters for Tanks
    Image of Product. Female × Butt Weld (For Curved Surface). Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Fittings, Straight Adapters for Tanks, Female, Threaded Fitting Connection, Butt-Weld Fitting Connection, For Curved Tank Surfaces.
    Image of Product. Female × Butt Weld (For Flat Surface). Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Fittings, Straight Adapters for Tanks, Threaded Fitting Connection, Butt-Weld Fitting Connection, Female, For Flat Tank Surfaces.

    Female × Butt Weld

    (For Curved Surface)

    Female × Butt Weld

    (For Flat Surface)

    Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.
    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    NPSC Thread—NPSC (National Pipe Straight Coupling) threads are compatible with NPT threads.
    NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.
    Pipe
    Size
    For Hole
    Diameter (B)
    OD
    For Tank
    OD (B)
    For Tank
    Surface (B)
    Material
    Max. Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1/4
    3/4"1 1/4"FlatCarbon SteelNot Rated12555K5100000
    3/8
    15/16"1 1/4"FlatCarbon SteelNot Rated12555K5200000
    1/2
    1 1/8"1 1/2"FlatCarbon SteelNot Rated12555K530000
    3/4
    1 3/8"1 3/4"FlatCarbon SteelNot Rated12555K540000
    1
    1 11/16"2 1/8"FlatCarbon SteelNot Rated12555K550000
    1 1/4
    2"2 1/2"FlatCarbon SteelNot Rated12555K560000
    1 1/2
    2 3/8"3"FlatCarbon SteelNot Rated12555K5700000
    2
    2 7/8"3 1/2"FlatCarbon SteelNot Rated12555K5800000
    2 1/2
    3 1/2"4 1/4"FlatCarbon SteelNot Rated12555K5900000
    3
    4 1/8"4 3/4"FlatCarbon SteelNot Rated12555K6100000
    4
    5 1/8"5 3/4"FlatCarbon SteelNot Rated12555K6200000
     
    NPTF Female × Butt Weld
    3/4
    1 1/8"2 3/16"20"CurvedSteelNot Rated1698T110000
     
    NPSC Female × Butt Weld
    1 1/4
    1 11/16"2 13/16"36"CurvedSteelNot Rated1698T120000
    1 1/2
    1 15/16"3 1/4"36"CurvedSteelNot Rated1698T130000
    2
    2 7/16"3 11/16"26 1/2"CurvedSteelNot Rated1698T140000
     
    Straight Adapters with Extension for Tanks
    Image of Product. Female × Butt Weld. Front orientation. Pipe and Fittings. Low-Pressure Iron and Steel Threaded Pipe Fittings, Straight Adapters with Extension for Tanks, Threaded Fitting Connection, Butt-Weld Fitting Connection, Female, For Flat Tank Surfaces.

    Female × Butt Weld

    Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.
    Adapters with extension fit tightly into the hole, which keeps the fitting steady during welding.
    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    Pipe
    Size
    For Hole
    Diameter (B)
    OD
    For Tank
    Surface (B)
    Material
    Max. Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1/8
    15/16"1 5/16"FlatCarbon SteelNot Rated12555K7900000
    1/8
    15/16"1 1/2"FlatCarbon SteelNot Rated12555K690000
    1/4
    15/16"1 5/16"FlatCarbon SteelNot Rated12555K810000
    1/4
    15/16"1 1/2"FlatCarbon SteelNot Rated12555K710000
    3/8
    15/16"1 5/16"FlatCarbon SteelNot Rated12555K820000
    3/8
    15/16"1 1/2"FlatCarbon SteelNot Rated12555K720000
    1/2
    1 1/8"1 5/8"FlatCarbon SteelNot Rated12555K830000
    1/2
    1 1/8"1 3/4"FlatCarbon SteelNot Rated12555K730000
    3/4
    1 5/16"1 15/16"FlatCarbon SteelNot Rated12555K840000
    3/4
    1 3/8"2 1/8"FlatCarbon SteelNot Rated12555K740000
    1
    1 5/8"2 3/8"FlatCarbon SteelNot Rated12555K750000
    1
    1 11/16"2 1/4"FlatCarbon SteelNot Rated12555K850000
    1 1/4
    2"2 9/16"FlatCarbon SteelNot Rated12555K8600000
    1 1/4
    2"2 11/16"FlatCarbon SteelNot Rated12555K760000
    1 1/2
    2 1/4"2 13/16"FlatCarbon SteelNot Rated12555K870000
    1 1/2
    2 1/4"3"FlatCarbon SteelNot Rated12555K770000
    2
    2 5/8"3 3/8"FlatCarbon SteelNot Rated12555K880000
    2
    2 5/8"3 1/2"FlatCarbon SteelNot Rated12555K7800000
    2 1/2
    3 1/8"4 1/16"FlatCarbon SteelNot Rated12555K8900000
    3
    3 5/8"4 5/8"FlatCarbon SteelNot Rated12555K9100000
    4
    4 11/16"5 13/16"FlatCarbon SteelNot Rated12555K9200000
     
    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° F180° Bend44605K56500000
    1 1/4
    Iron150 psi @ 72° F150 psi @ 350° FUL Listed
    180° Bend44605K56600000
    1 1/2
    Iron150 psi @ 72° F150 psi @ 350° FUL Listed
    180° Bend44605K567000000
    2
    Iron150 psi @ 72° F150 psi @ 350° FUL Listed
    180° Bend44605K568000000
     

    Low-Pressure Stainless Steel Threaded Pipe Fittings

    Use these fittings in a low-pressure pipe line.
    Straight Adapters for Tanks
    Image of Product. Female × Butt Weld. Front orientation. Pipe and Fittings. Low-Pressure Stainless Steel Threaded Pipe Fittings, Straight Adapters for Tanks, Threaded Fitting Connection, Female, Butt-Weld Fitting Connection, For Curved Tank Surfaces.

    Female × Butt

    Weld

    Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.
    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.
    316/316L Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    316/316L Stainless Steel
    Pipe
    Size
    For Hole
    Diameter (B)
    OD
    For Tank
    OD (B)
    For Tank
    Surface (B)
    Max. Pressure
    @ Temp.
    Each
    NPTF Female × Butt Weld
    3/4
    1 1/8"2 3/8"20"CurvedNot Rated1698T31000000
    1
    1 3/8"2 5/16"20"CurvedNot Rated1698T3200000
    1 1/2
    2 1/16"3 1/4"21"CurvedNot Rated1698T3300000
     
    Straight Adapters with Extension for Tanks
    Image of Product. Female × Butt Weld. Front orientation. Pipe and Fittings. Low-Pressure Stainless Steel Threaded Pipe Fittings, Straight Adapters with Extension for Tanks, Threaded Fitting Connection, Butt-Weld Fitting Connection, Female, For Flat Tank Surfaces.

    Female × Butt Weld

    Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.
    Adapters with extension fit tightly into the hole, which keeps the fitting steady during welding.
    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    316 Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
    316 Stainless Steel
    Pipe
    Size
    For Hole
    Diameter (B)
    OD
    For Tank
    Surface (B)
    Max. Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1/4
    15/16"1 1/2"FlatNot Rated1145K51000000
    3/8
    15/16"1 1/2"FlatNot Rated1145K5200000
    1/2
    1 1/8"1 3/4"FlatNot Rated1145K5300000
    3/4
    1 3/8"2 1/8"FlatNot Rated1145K5400000
    1
    1 11/16"2 3/8"FlatNot Rated1145K5500000
    1 1/4
    2"2 11/16"FlatNot Rated1145K5600000
    1 1/2
    2 1/4"3"FlatNot Rated1145K5700000
    2
    2 5/8"3 1/2"FlatNot Rated1145K5800000
    2 1/2
    3 3/16"4 1/16"FlatNot Rated1145K59000000
    3
    3 11/16"4 5/8"FlatNot Rated1145K61000000
    4
    4 7/8"5 3/4"FlatNot Rated1145K62000000
     

    Low-Pressure Aluminum Threaded Pipe Fittings

    In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.
    Straight Adapters for Tanks
    Image of Product. NPTF Female × Butt Weld. Front orientation. Pipe and Fittings. Low-Pressure Aluminum Threaded Pipe Fittings, Straight Adapters for Tanks, Female, Threaded Fitting Connection, Butt-Weld Fitting Connection, For Curved Tank Surfaces.

    NPTF Female ×

    Butt Weld

    Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.
    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.
    Pipe
    Size
    For Hole
    Diameter (B)
    OD
    For Tank
    OD (B)
    For Tank
    Surface (B)
    Material
    Max. Pressure
    @ Temp.
    Each
    NPTF Female × Butt Weld
    1 1/4
    1 3/4"2 13/16"36"Curved6061 AluminumNot Rated1698T2100000
    1 1/2
    2"3 1/4"36"Curved6061 AluminumNot Rated1698T220000
     
    Straight Adapters with Extension for Tanks
    Image of Product. NPT Female × Butt Weld. Front orientation. Pipe and Fittings. Low-Pressure Aluminum Threaded Pipe Fittings, Straight Adapters with Extension for Tanks, Threaded Fitting Connection, Butt-Weld Fitting Connection, Female, For Flat Tank Surfaces.

    NPT Female × Butt

    Weld

    Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.
    Adapters with extension fit tightly into the hole, which keeps the fitting steady during welding.
    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    Pipe
    Size
    For Hole
    Diameter (B)
    OD
    For Tank
    Surface (B)
    Material
    Max. Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1/8
    7/8"1 5/16"Flat6061 AluminumNot Rated8694T4100000
    1/4
    7/8"1 5/16"Flat6061 AluminumNot Rated8694T4200000
    3/8
    1 3/16"1 7/16"Flat6061 AluminumNot Rated8694T4300000
    1/2
    1 1/8"1 5/8"Flat6061 AluminumNot Rated8694T4400000
    3/4
    1 5/16"2"Flat6061 AluminumNot Rated8694T4500000
    1
    1 11/16"2 1/4"Flat6061 AluminumNot Rated8694T4600000
    1 1/4
    1 15/16"2 9/16"Flat6061 AluminumNot Rated8694T4700000
    1 1/2
    2 1/4"2 15/16"Flat6061 AluminumNot Rated8694T4800000
    2
    2 5/8"3 3/8"Flat6061 AluminumNot Rated8694T4900000
    3
    3 11/16"4 5/8"Flat6061 AluminumNot Rated8694T51000000
    4
    4 3/4"5 13/16"Flat6061 AluminumNot Rated8694T52000000
     
    180° Bend Connectors
    Image of Product. Front orientation. Pipe Traps. Low-Pressure Aluminum Threaded Pipe Fittings.
    180° bend connectors are also known as U-bends.
    Pipe
    Size
    Material
    Max. Pressure
    @ Temp.
    Shape
    Each
    NPT Female
    1/2
    356 Aluminum150 psi @ 72° F180° Bend44705K479000000
    3/4
    356 Aluminum150 psi @ 72° F180° Bend44705K48100000
    1
    356 Aluminum150 psi @ 72° F180° Bend44705K48200000
     

    Spin-Weld Plastic Pipe Fittings for Water

    Image of ProductInUse. Front orientation. Pipe and Fittings. Spin-Weld Plastic Pipe Fittings for Water.
    Create a leak-free, durable connection in plastic tanks, walls, or panels without gaskets or sealants. As you spin these fittings with a handheld electric router, they melt into the surface of your tank for a seal without any joints. To hold these fittings in your router, you’ll need the installation tool (sold separately). For proper installation, you’ll want to use a hole saw to drill a hole that matches the For Hole Diameter listed and check that your router meets the speed and power requirements shown in the table.
    To prevent leaks in threaded connections, apply a sealant to the male threads. Threaded connections can be taken apart as needed for maintenance and repair. For metal threads, use PTFE tape. For plastic threads, apply a non-hardening, plastic-compatible sealant. Tape or sealants with PTFE are not recommended for plastic-to-plastic connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns.
    Through-Wall Straight Adapters for Tanks
    Image of Product. Front orientation. Pipe and Fittings. Spin-Weld Plastic Pipe Fittings for Water, Through-Wall Straight Adapters for Tanks.
    Through-wall fittings are also known as bulkhead couplings; they mount through your wall or tank to create an inlet or outlet. When installing, the gasket should be on the inside of the wall.
    Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.
    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    Pipe
    Size
    Hose
    Size
    For Hole
    Diameter (B)
    For Tank
    Surface (B)
    Material
    Color
    Each
    NPT Female × Butt Weld
    1/4
    0.88"FlatLDPEWhite4526N1100000
    1/2
    0.88"FlatLDPEWhite4526N210000
    3/4
    1.31"FlatLDPEWhite4526N310000
    1
    1.5"FlatLDPEWhite4526N410000
    1 1/2
    2"FlatLDPEWhite4526N510000
    2
    2.5"FlatLDPEWhite4526N610000
     
    GHT Male × Butt Weld
    3/41"FlatLDPEWhite4526N710000
     
    Installation Tools
    Image of Product. Front orientation. Spin-Weld Installation Tools.
    For Pipe
    Size
    For Hose
    Size
    Shank
    Dia.
    Overall
    Lg.
    Material
    Shank
    Type
    For Tool
    Type
    Each
    For Pipe Connection
    1/4
    1/4"1 5/8"Aluminum
    RoundHand Router4526N10000000
    1/2
    1/4"1 5/8"Aluminum
    RoundHand Router4526N2000000
    3/4
    1/2"2"Aluminum
    RoundHand Router4526N3000000
    1
    1/2"2 1/4"Aluminum
    RoundHand Router4526N4000000
    1 1/2
    1/2"2 1/4"Aluminum
    RoundHand Router4526N5000000
    2
    1/2"2 1/4"Aluminum
    RoundHand Router4526N6000000
     
    For Hose Connection
    3/41/4"1 3/4"Aluminum
    RoundHand Router4526N7000000
     
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