Brass ASME Pipe Flanges | McMaster-Carr

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31 Products

About Pipe and Fittings

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

Low-Pressure Brass and Bronze Threaded Pipe Flanges

Front

Flat Surface on Back

For Use With: Air, Drinking Water, Natural Gas, Oil, Steam, Water
Pressure Class: 150
Specifications Met:
NPT: ASME B1.20.1, ASME B16.24, ASTM B584, NSF/ANSI 61
BSPT: ASTM B584, BS21
Pipe Nipples and Pipe: Use Schedule 40 brass
Fittings:
NPT: Use Class 125 brass
BSPT: Use Class 125 bronze

Also known as Pressure Class 150 flanges, these are designed for low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges have good corrosion resistance. To adhere to safety standards for drinking water systems, use flanges that meet NSF/ANSI 61.

			Bolt Hole
Pipe Size	Flange OD	For Bolt Dia.	Dia.	No. of	Bolt Circle Dia.	Max. Pressure	Max. Steam Pressure	Material		Each
NPT
1/2	3 1/2"	1/2"	5/8"	4	2 3/8"	225 psi @ 72° F	__	Brass	4429K551	000000
3/4	3 7/8"	1/2"	5/8"	4	2 3/4"	225 psi @ 72° F	__	Brass	4429K552	00000
1	4 1/4"	1/2"	5/8"	4	3 1/8"	225 psi @ 72° F	__	Brass	4429K553	00000
1 1/4	4 5/8"	1/2"	5/8"	4	3 1/2"	225 psi @ 72° F	__	Brass	4429K554	00000
1 1/2	5"	1/2"	5/8"	4	3 7/8"	225 psi @ 72° F	__	Brass	4429K555	000000
2	6"	5/8"	3/4"	4	4 3/4"	225 psi @ 72° F	__	Brass	4429K556	000000
2 1/2	7"	5/8"	3/4"	4	5 1/2"	225 psi @ 72° F	__	Brass	4429K557	000000
3	7 1/2"	5/8"	3/4"	4	6"	225 psi @ 72° F	__	Brass	4429K558	000000
4	9"	5/8"	3/4"	8	7 1/2"	225 psi @ 72° F	__	Brass	4429K559	000000
BSPT
1/2	3 1/2"	1/2"	5/8"	4	2 3/8"	200 psi @ 72° F	125 psi @ 400° F	Bronze	4978K194	00000
3/4	3 7/8"	1/2"	5/8"	4	2 3/4"	200 psi @ 72° F	125 psi @ 400° F	Bronze	4978K195	00000
1	4 1/4"	1/2"	5/8"	4	3 1/8"	200 psi @ 72° F	125 psi @ 400° F	Bronze	4978K196	000000
1 1/2	5"	1/2"	5/8"	4	3 7/8"	200 psi @ 72° F	125 psi @ 400° F	Bronze	4978K198	000000
2	6"	5/8"	3/4"	4	4 3/4"	200 psi @ 72° F	125 psi @ 400° F	Bronze	4978K199	000000

Brass and Bronze Unthreaded Pipe Flanges

Bolt these flanges to equipment or to another same-size, flat-surface flange with a gasket (sold separately). They have good corrosion resistance.

Cap flanges are also known as blind flanges.

Caps

Front

Flat Surface on Back

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Water
Pressure Class : 150
Specifications Met: ASME B16.24
Pipe Nipples and Pipe: Use Schedule 40 brass

			Bolt Hole
Pipe Size	Flange OD	For Bolt Dia.	Dia.	No. of	Bolt Circle Dia.	Max. Pressure	Material		Each
2	6"	1/2"	3/4"	4	4 3/4"	225 psi @ 72° F	Brass	4429K861	0000000
2 1/2	7"	1/2"	3/4"	4	5 1/2"	225 psi @ 72° F	Brass	4429K862	000000

Solder-Connect Fittings for Copper Tubing

Temperature Range: 32° to 200° F

Solder these fittings to copper tubing or the tube end of another fitting for a permanent, leak-tight connection. They are also known as sweat fittings. Fittings have good corrosion resistance. To adhere to safety standards for drinking water systems, use fittings that meet NSF/ANSI 61 or EN 1057.

Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.

Flanges, Female Socket-Connect Tube

For Use With: Drinking Water
Tubing: Use with K, M, L copper
Specifications Met: See table

Fittings with flange end bolt to equipment or another same-size flange to create an access point within a line.

Copper Tube Size	For Tube OD	Flange OD	Bolt Circle Dia.	Number of Bolt Holes	Bolt Hole Diameter	For Bolt Diameter	Bolts Included	Material	Max. Pressure	Specifications Met		Each
1	1 1/8"	4 1/4"	3 1/8"	4	5/8"	1/2"	No	Brass	400 psi @ 72° F	ASME B16.18, NSF/ANSI 61	5520K123	000000
1 1/4	1 3/8"	4 5/8"	3 1/2"	4	5/8"	1/2"	No	Brass	400 psi @ 72° F	ASME B16.18, NSF/ANSI 61	5520K124	000000
1 1/2	1 5/8"	5"	3 7/8"	4	5/8"	1/2"	No	Brass	400 psi @ 72° F	ASME B16.18, NSF/ANSI 61	5520K125	000000
2	2 1/8"	6"	4 3/4"	4	3/4"	5/8"	No	Brass	300 psi @ 72° F	ASME B16.18, NSF/ANSI 61	5520K126	000000
2 1/2	2 5/8"	7"	5 1/2"	4	3/4"	5/8"	No	Brass	300 psi @ 72° F	ASME B16.22, MSS-SP104, NSF/ANSI 61	5520K311	000000
3	3 1/8"	7 1/2"	6"	4	3/4"	5/8"	No	Brass	300 psi @ 72° F	ASME B16.22, MSS-SP104, NSF/ANSI 61	5520K312	000000

Press-Connect Fittings for Copper Tubing

For Use With: Drinking Water
Maximum Pressure: Fittings compatible with Viega ProPress or Viega ProPress XL-C: 200 psi @ 72° F
Fittings compatible with Viega Pex or Viega PureFlow Press: 100 psi @ 72° F
Temperature Range: 0° to 250° F
Tubing: Fittings compatible with Viega ProPress or Viega ProPress XL-C: Use with K, M, L copper
Fittings compatible with Viega Pex or Viega PureFlow Press: Use with hard polyethylene plastic
Specifications Met: See table

Crimp these fittings to copper tubing with a crimping tool (sold separately). An O-ring on the inside of the fitting creates a leak-tight connection that doesn’t require heat or soldering. They are comparable to Viega ProPress fittings. Fittings have good corrosion resistance. They meet NSF/ANSI safety standards for use with drinking water systems.

Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.

Straight Adapters, Female Press-Connect Tube × Flanged Pipe

Straight adapters with flanged end bolt to equipment or other flanged connections found on pumps and valves to create a convenient access point.

					Bolt Hole
Copper Tube Size	For Tube OD	Pipe Size	Flange OD	Bolt Circle Dia.	Dia.	No. of	For Bolt Dia.	Bolts Included	Lg.	Material	Flange Material	Compatible With	Specifications Met		Each
1	1 1/8"	1	4 21/64"	3 7/64"	5/8"	4	1/2"	No	2 49/64"	Bronze	Powder-Coated Steel	Viega ProPress	ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61	1747N455	0000000
1 1/4	1 3/8"	1 1/4	4 17/32"	3 1/2"	5/8"	4	1/2"	No	2 49/64"	Bronze	Powder-Coated Steel	Viega ProPress	ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61	1747N456	000000
1 1/2	1 5/8"	1 1/2	4 59/64"	3 55/64"	5/8"	4	1/2"	No	3 1/16"	Bronze	Powder-Coated Steel	Viega ProPress	ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61	1747N458	000000
2	2 1/8"	2	5 29/32"	4 49/64"	3/4"	4	5/8"	No	3 21/32"	Bronze	Powder-Coated Steel	Viega ProPress	ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, FM Approved, NSF/ANSI 61	1747N459	000000

Replacement O-Rings

For Copper Tube Size	For Tube OD	O-Ring Material	Compatible With		Each
1	1 1/8"	EPDM Rubber	Viega ProPress	1747N61	00000
1 1/4	1 3/8"	EPDM Rubber	Viega ProPress	1747N819	0000
1 1/2	1 5/8"	EPDM Rubber	Viega ProPress	1747N847	0000
2	2 1/8"	EPDM Rubber	Viega ProPress	1747N979	0000

Crimping Tools with Six Jaws

Jaws for copper tube sizes ½ to 2 fit directly into the included crimping tool.

			Battery
For Copper Tube Size	For Tube OD	Voltage	No. Included	Cap., amp-hrs.	Battery Charger Included	Battery Charging Time, min.	Compatible With	Specifications Met		Each
1/2, 3/4, 1, 1 1/4, 1 1/2, 2	5/8", 7/8", 1 1/8", 1 3/8", 1 5/8", 2 1/8"	18V DC	2	3	Yes	39	Viega ProPress	EMC 2011/65/EU, EMC 2014/30/EU, IEC 62841-1, UL 62841-1	2233N328	000000000