ASTM A536 Pipe Fittings | McMaster-Carr

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73 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

High-Pressure Iron and Steel Threaded Pipe Fittings

These fittings can stand up to high-pressure applications. Use them in noncorrosive environments.

Fittings with intermittent swivel have ball bearings and rotate 360° as needed to allow movement in a rigid metal piping system.

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.

For technical drawings and 3-D models, click on a part number.

Swivel Straight Connectors

For Use With:
Intermittent Swivel: Coolant, Water
Swivels Until Tightened: Air, Coolant, Hydraulic Fluid
Temperature Range: -20° to 225° F
Specifications Met: See table
Pipe Nipples and Pipe: Use Schedule 160 steel
Flanges: Use Class 1500 steel

NPT Female—Intermittent Swivel
Pipe Size	Max. Pressure	Max. Vacuum	Material	Specifications Met		Each
1	600 psi @ 72° F	29 in. of Hg @ 72° F	Iron	ASME B16.1, ASTM A536	00000000	0000000
1 1/2	600 psi @ 72° F	29 in. of Hg @ 72° F	Iron	ASME B16.1, ASTM A536	00000000	000000
2	600 psi @ 72° F	29 in. of Hg @ 72° F	Iron	ASME B16.1, ASTM A536	00000000	000000
3	600 psi @ 72° F	29 in. of Hg @ 72° F	Iron	ASME B16.1, ASTM A536	00000000	000000

Swivel 90° Elbow Connectors

For Use With:
Intermittent Swivel: Coolant, Water
Swivels Until Tightened: Air, Coolant, Hydraulic Fluid
Temperature Range: -20° to 225° F
Specifications Met: See table
Pipe Nipples and Pipe: Use Schedule 160 steel
Flanges: Use Class 1500 steel

NPT Female—Intermittent Swivel
Pipe Size	Max. Pressure	Max. Vacuum	Material	Specifications Met		Each
1	600 psi @ 72° F	29 in. of Hg @ 72° F	Iron	ASME B16.1, ASTM A536	00000000	0000000
1 1/2	600 psi @ 72° F	29 in. of Hg @ 72° F	Iron	ASME B16.1, ASTM A536	00000000	000000
2	600 psi @ 72° F	29 in. of Hg @ 72° F	Iron	ASME B16.1, ASTM A536	00000000	000000
3	600 psi @ 72° F	29 in. of Hg @ 72° F	Iron	ASME B16.1, ASTM A536	00000000	000000

Grooved-End Iron Pipe Fittings

The grooved ends on these fittings connect to pipe with a clamp to easily install piping systems. Since there’s no heat or threading required, they provide quick access to a pipe line for routine maintenance. Fittings are also known as Victaulic fittings. They are for use in noncorrosive applications.

Clamps have a two-piece housing that can remain intact for installation.

Inline tees are also known as branch tees.

For technical drawings and 3-D models, click on a part number.

Straight Reducing Adapters

For Use With: Air, Water
Temperature Range: -30° to 250° F
Specifications Met: UL Listed, ASTM A536, FM Approved

Pipe Size
(A)	(B)	Max. Pressure	Color	Material		Each
Grooved End × NPT Male
2	1	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
2	1 1/2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	00000
2 1/2	1 1/2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
2 1/2	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	00000
3	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000
4	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000
4	3	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000

Straight Reducers

For Use With: Air, Water
Temperature Range: -30° to 250° F
Specifications Met: UL Listed, FM Approved, ASTM A536

Pipe Size
(A)	(B)	Max. Pressure	Color	Material		Each
2 1/2	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
3	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	00000
3	2 1/2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	00000
4	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	00000
4	3	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
6	4	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000

Clamps

Clamp

For Use With: See table
Temperature Range: See table
Specifications Met: UL Listed, FM Approved, ASTM A536

Clamps									Replacement Gaskets
For Pipe Size	For Pipe OD	Max. Pressure	Temperature Range	Color	Material	Gasket Material		Each		Each
Air, Oil
2	2 3/8"	750 psi @ 72° F	-20° to 180° F	Orange	Enamel-Coated Ductile Iron	Buna-N Rubber	00000000	000000	00000000	000000
2 1/2	2 7/8"	750 psi @ 72° F	-20° to 180° F	Orange	Enamel-Coated Ductile Iron	Buna-N Rubber	0000000	00000	0000000	00000
3	3 1/2"	750 psi @ 72° F	-20° to 180° F	Orange	Enamel-Coated Ductile Iron	Buna-N Rubber	00000000	00000	00000000	00000
4	4 1/2"	750 psi @ 72° F	-20° to 180° F	Orange	Enamel-Coated Ductile Iron	Buna-N Rubber	00000000	000000	00000000	00000
6	6 5/8"	750 psi @ 72° F	-20° to 180° F	Orange	Enamel-Coated Ductile Iron	Buna-N Rubber	0000000	000000	0000000	000000
Water
2	2 3/8"	750 psi @ 72° F	-30° to 250° F	Orange	Enamel-Coated Ductile Iron	EPDM Rubber	00000000	00000	00000000	00000
2 1/2	2 7/8"	750 psi @ 72° F	-30° to 250° F	Orange	Enamel-Coated Ductile Iron	EPDM Rubber	0000000	00000	0000000	00000
3	3 1/2"	750 psi @ 72° F	-30° to 250° F	Orange	Enamel-Coated Ductile Iron	EPDM Rubber	00000000	00000	00000000	00000
4	4 1/2"	750 psi @ 72° F	-30° to 250° F	Orange	Enamel-Coated Ductile Iron	EPDM Rubber	00000000	000000	00000000	00000
6	6 5/8"	700 psi @ 72° F	-30° to 250° F	Orange	Enamel-Coated Ductile Iron	EPDM Rubber	0000000	000000	0000000	000000

90° Elbow Connectors

For Use With: Air, Water
Temperature Range: -30° to 250° F
Specifications Met: UL Listed, FM Approved, ASTM A536

Pipe Size	Max. Pressure	Color	Material		Each
2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000
2 1/2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	00000
3	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000
4	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000
6	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000

45° Elbow Connectors

For Use With: Air, Water
Temperature Range: -30° to 250° F
Specifications Met: UL Listed, FM Approved, ASTM A536

Pipe Size	Max. Pressure	Color	Material		Each
2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
2 1/2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	00000
3	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
4	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
6	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000

Tee Connectors

For Use With: Air, Water
Temperature Range: -30° to 250° F
Specifications Met: UL Listed, FM Approved, ASTM A536

Pipe Size	Max. Pressure	Color	Material		Each
2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	0000000
3	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000
4	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000
6	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000

Inline Tee Reducing Adapters

For Use With: Air, Water
Temperature Range: -30° to 250° F
Specifications Met: UL Listed, FM Approved, ASTM A536

Pipe Size
(A)	(B)	Max. Pressure	Color	Material		Each
Grooved End × NPT Male
2	1	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	0000000
2	1 1/2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
3	1 1/2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
3	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000
4	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000

Inline Tee Reducers

For Use With: Air, Water
Temperature Range: -30° to 250° F
Specifications Met: UL Listed, FM Approved, ASTM A536

Pipe Size
(A)	(B)	Max. Pressure	Color	Material		Each
3	2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	0000000
4	3	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000

Caps

For Use With: Air, Water
Temperature Range: -30° to 250° F
Specifications Met: UL Listed, FM Approved, ASTM A536

Pipe Size	Max. Pressure	Color	Material		Each
2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	000000
2 1/2	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	00000
3	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	00000
4	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	0000000	00000
6	750 psi @ 72° F	Orange	Enamel-Coated Ductile Iron	00000000	000000

High-Pressure Clamp-On Connectors

Connector with 2 Bolts

For Use With: Bases, Drinking Water, Mild Acids, Salt Solutions
Temperature Range: -20° to 180° F
Specifications Met:
Pipe Size of 1/2-2: ASTM A307, ASTM A536, AWWA C-219, NSF/ANSI 61
Pipe Size of 3-8: ASTM A513, ASTM A53, ASTM A715, AWWA C-219, NSF/ANSI 61
For Pipe Material: Iron, Steel, PVC Plastic

These heavy duty steel connectors are designed for high-pressure applications. Use them to connect rigid pipe of the same or different materials. They meet NSF/ANSI 61 safety standards for use with drinking water systems. To install, center the connector over two pipe ends and tighten the bolts with a wrench. They allow limited expansion and contraction; they do not restrain side-to-side movement.

For technical drawings and 3-D models, click on a part number.

For Pipe OD	For Pipe Size	Lg.	No. of Bolts	Max. Pressure	Max. Vacuum	Material	Gasket Material		Each
0.84"	1/2	7"	2	500 psi @ 72° F	15 in. of Hg @ 72° F	Steel	Buna-N Rubber	0000000	000000
1.05"	3/4	7"	2	500 psi @ 72° F	15 in. of Hg @ 72° F	Steel	Buna-N Rubber	0000000	00000
1.315"	1	7"	2	500 psi @ 72° F	15 in. of Hg @ 72° F	Steel	Buna-N Rubber	0000000	00000
1.66"	1 1/4	7"	2	500 psi @ 72° F	15 in. of Hg @ 72° F	Steel	Buna-N Rubber	0000000	00000
1.9"	1 1/2	7"	2	500 psi @ 72° F	15 in. of Hg @ 72° F	Steel	Buna-N Rubber	0000000	00000
2.38"	2	8"	2	500 psi @ 72° F	15 in. of Hg @ 72° F	Steel	Buna-N Rubber	0000000	000000