Bronze Flat-Face Pipe Flanges

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26 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.

Socket-connect flanges braze onto unthreaded pipe with a brazing ring (sold separately) for a strong, leak-resistant connection. They are also known as Silbraze flanges.

Cap flanges are also known as blind flanges.

Socket-Connect Flanges

Front

Flat Surface on Back

For Use With: Air, Natural Gas, Oil, Water, Steam
Specifications Met: MIL-F-1183
Pipe Nipples and Pipe: Use Schedule 40 brass

Flanges
			Bolt Hole								Brazing Rings
Pipe Size	Flange OD	For Bolt Dia.	Dia.	No. of	Bolt Circle Dia.	Max. Pressure	Max. Steam Pressure	Material		Each		Each
1/2	3 1/2"	1/2"	5/8"	4	2 3/8"	200 psi @ 72° F	200 psi @ 425° F	Bronze	2190K39	0000000	2190K45	00000
3/4	3 7/8"	1/2"	5/8"	4	2 3/4"	200 psi @ 72° F	200 psi @ 425° F	Bronze	2190K41	000000	2190K46	0000
1	4 1/4"	1/2"	5/8"	4	3 1/8"	200 psi @ 72° F	200 psi @ 425° F	Bronze	2190K42	000000	2190K47	0000
1 1/2	5"	1/2"	5/8"	4	3 7/8"	200 psi @ 72° F	200 psi @ 425° F	Bronze	2190K43	000000	2190K48	0000
2	6"	5/8"	3/4"	4	4 3/4"	200 psi @ 72° F	200 psi @ 425° F	Bronze	2190K44	000000	2190K49	0000

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