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    15 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

    Fitting Type

    Low-Pressure Stainless Steel Threaded Pipe Fittings

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

    Female × Butt

    Weld

    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    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.
    Pipe
    Size
    304 Stainless Steel
    316 Stainless Steel
    (A)
    (B)
    Pressure
    Class
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1
    		1
    		150
    		300 psi @ 72° F150 psi @ 350° F4464K47500000300 psi @ 72° F150 psi @ 350° F4452K21400000
     
    BSPT Female × Butt Weld
    1
    		1
    		150
    		300 psi @ 72° F150 psi @ 350° F4810T24600000—————0
     

    High-Pressure Iron and Steel Threaded Pipe Fittings

    These fittings can stand up to high-pressure applications. Use them in noncorrosive environments.
    Note: The maximum pressure listed for Class 3000 fittings is for conditions where there are no sudden changes in pressure or velocity. Please refer to ASME B16.11 to determine the specific maximum operating pressure for your application.
    Straight Adapters
    Image of Product. Threaded NPT Female × Butt Weld. Front orientation. Pipe and Fittings. High-Pressure Iron and Steel Threaded Pipe Fittings, Straight Adapters, Threaded Fitting Connection, Butt-Weld Fitting Connection, Female.

    Threaded NPT

    Female × Butt Weld

    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    Zinc-Phosphate-Coated Steel—A phosphate coating offers some corrosion resistance, but these fittings aren't intended for corrosive environments.
    Pipe
    Size
    Dash
    Size
    (A)
    (B)
    (A)
    (B)
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1
    		1
    		16163000
    		Zinc-Phosphate-Coated Steel3,000 psi @ 72° F300 psi @ 360° F4513K7500000
     

    High-Pressure Stainless Steel Threaded Pipe Fittings

    Use these heavy duty fittings in high-pressure flow applications.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Straight Adapters
    Image of Product. Female x Butt Weld. Front orientation. Pipe and Fittings. High-Pressure Stainless Steel Threaded Pipe Fittings, Straight Adapters, Butt-Weld Fitting Connection, Female, Threaded Fitting Connection.

    Female x Butt

    Weld

    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    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.
    Pipe
    Size
    Dash
    Size
    304 Stainless Steel
    316 Stainless Steel
    (A)
    (B)
    (A)
    (B)
    Pressure
    Class
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1
    		1
    		16163000
    		2,500 psi @ 72° F1,900 psi @ 350° F45525K5760000003,000 psi @ 72° F2,800 psi @ 350° F4443K676000000
     

    Medium-Pressure Stainless Steel Threaded Pipe Fittings

    Choose these fittings when you want the same high-quality found in our low-pressure pipe fittings, but need more strength to handle higher pressures.
    Straight Adapters
    Image of Product. Female x Butt Weld. Front orientation. Pipe and Fittings. Medium-Pressure Stainless Steel Threaded Pipe Fittings, Straight Adapters, Butt-Weld Fitting Connection, Female, Threaded Fitting Connection.

    Female x

    Butt Weld

    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
    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.
    Pipe
    Size
    304
    Stainless Steel
    316
    Stainless Steel
    (A)
    (B)
    Pressure
    Class
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    Each
    NPT Female × Butt Weld
    1
    		1
    		1000
    		1,000 psi @ 72° F650 psi @ 350° F4464K2260000004452K316000000
     

    Extreme-Pressure Iron and Steel Threaded Pipe Fittings

    The strongest steel fittings we offer, these can withstand extreme-pressure applications.
    Note: The maximum pressure listed for Class 6000 fittings is for conditions where there are no sudden changes in pressure or velocity. Please refer to ASME B16.11 to determine the specific maximum operating pressure for your application.
    Straight Connectors
    Image of Product. Front orientation. Pipe and Fittings. Extreme-Pressure Iron and Steel Threaded Pipe Fittings, Straight Connectors, Female, Threaded Fitting Connection.

    Threaded Fitting

    Connection, Female

    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1
    		166000
    		Steel
    		6,000 psi @ 72° F300 psi @ 360° F43455K65000000
     
    Union Straight Connectors
    Image of System. Exploded View. Front orientation. Exploded view. Pipe and Fittings. Extreme-Pressure Iron and Steel Threaded Pipe Fittings, Union Straight Connectors, Female, Threaded Fitting Connection.

    Exploded View

    Union fittings separate into three pieces so you can access your line without unthreading pipe connections.
    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Body
    Shape
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1
    		166000
    		HexSteel
    		6,000 psi @ 72° F300 psi @ 360° F43455K95000000
     
    Straight Adapters
    Image of Product. Front orientation. Pipe and Fittings. Extreme-Pressure Iron and Steel Threaded Pipe Fittings, Straight Adapters, Threaded Fitting Connection, Butt-Weld Fitting Connection, Female.

    Female,

    Butt-Weld

    Fitting

    Connection,

    Threaded Fitting

    Connection

    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    Pipe
    Size
    Dash
    Size
    (A)
    (B)
    (A)
    (B)
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1
    		1
    		16166000
    		Steel
    		6,000 psi @ 72° F300 psi @ 360° F43455K7500000
     
    90° Elbow Connectors
    Image of Product. Female. Front orientation. Pipe and Fittings. Extreme-Pressure Iron and Steel Threaded Pipe Fittings, 90° Elbow Connectors, Female, Threaded Fitting Connection.

    Female

    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1
    		166000
    		Steel
    		6,000 psi @ 72° F300 psi @ 360° F43455K15000000
     
    Tee Connectors
    Image of Product. Female. Front orientation. Pipe and Fittings. Extreme-Pressure Iron and Steel Threaded Pipe Fittings, Tee Connectors, Female, Threaded Fitting Connection.

    Female

    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1
    		166000
    		Steel
    		6,000 psi @ 72° F300 psi @ 360° F43455K45000000
     
    Caps
    Image of Product. Female. Front orientation. Pipe and Fittings. Extreme-Pressure Iron and Steel Threaded Pipe Fittings, Caps, Female, Threaded Fitting Connection.

    Female

    Pipe
    Size
    Dash
    Size
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female
    1
    		166000
    		Steel
    		6,000 psi @ 72° F300 psi @ 360° F43455K85000000
     

    High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

    A galvanized finish gives these fittings better corrosion resistance than our plain steel high-pressure fittings. Also known as Pressure Class 3000 fittings, they have excellent strength to handle high-pressure applications.
    Straight Adapters
    Image of Product. Female × Butt Weld. Front orientation. Pipe and Fittings. High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings, Straight Adapters, Threaded Fitting Connection, Butt-Weld Fitting Connection, Female.

    Female × Butt

    Weld

    Threaded Fitting Connection—Threaded female x butt weld straight adapters are also known as half couplings.
    Pipe
    Size
    Dash
    Size
    (A)
    (B)
    (A)
    (B)
    Pressure
    Class
    Material
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Each
    NPT Female × Butt Weld
    1
    		1
    		16163000
    		Galvanized Steel3,000 psi @ 72° F300 psi @ 360° F7739K15600000
     
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