Bronze Pipe Reducers | McMaster-Carr

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Maximum Pressure @ Temperature

160 psi @ 72° F

200 psi @ 72° F

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125 psi @ 400° F

For Flange Class

150

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Copper Tube Size

50 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.

Low-Pressure Brass and Bronze Threaded Pipe Fittings

Use these fittings in low-pressure flow applications. They have good corrosion resistance.

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

Bushing Straight Reducing Adapters with Hex or Octagon Body

For Use With:
Brass: Air, Drinking Water, Natural Gas, Oil
Bronze: Air, Natural Gas, Oil, Steam, Water
Pressure Class: 125
Specifications Met: See table
Pipe Nipples and Pipe: Use Schedule 40 brass
Flanges: See table

Pipe Size							For Flange
(A)	(B)	Max. Pressure	Max. Steam Pressure	Body Shape	Material	Hex Width	Class	Material	Specifications Met		Each
BSPT Male × BSPT Female
1/2	1/8	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	26mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1/2	1/4	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	26mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	0000
1/2	3/8	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	25mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	0000
3/4	1/4	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	31mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
3/4	3/8	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	31mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
3/4	1/2	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	30mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1	1/2	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	37mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1	3/4	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	37mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1 1/4	3/4	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	46mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1 1/4	1	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	46mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1 1/2	1/4	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	27mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1 1/2	1/2	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	35mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1 1/2	3/4	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	43mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1 1/2	1	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	52mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
1 1/2	1 1/4	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	52mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
2	1	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	51mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
2	1 1/4	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	65mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000
2	1 1/2	200 psi @ 72° F	125 psi @ 400° F	Hex	Bronze	64mm	150	Bronze	ASME B16.15, ASME BS21, ASTM B584	00000000	00000

Straight Reducers

For Use With:
NPT: Air, Drinking Water, Natural Gas, Oil
BSPT: Air, Natural Gas, Oil, Steam, Water
Pressure Class: 125
Specifications Met:
NPT: ASME B1.20.1, ASME B16.15, NSF/ANSI 61
BSPT: ASME B16.15, ASME BS21, ASTM B584
Pipe Nipples and Pipe: Use Schedule 40 brass
Flanges:
NPT: Use Class 150 brass
BSPT: Use Class 150 bronze

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
BSPT Female
1/4	1/8	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
3/8	1/4	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	0000
1/2	1/8	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1/2	1/4	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1/2	3/8	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
3/4	1/4	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
3/4	3/8	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
3/4	1/2	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1	1/2	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1	3/4	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1 1/4	3/4	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1 1/4	1	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1 1/2	3/4	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1 1/2	1	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
1 1/2	1 1/4	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
2	1	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
2	1 1/4	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000
2	1 1/2	200 psi @ 72° F	125 psi @ 400° F	Bronze	00000000	00000

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.

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

Straight Reducing Adapters, Male Press-Connect Tube × Female Press-Connect Tube

Tube Connection (Male)		Tube Connection (Female)
Copper Tube Size	Tube OD	Copper Tube Size	For Tube OD	Lg.	Material	Compatible With	Specifications Met		Each
1 1/2	1 5/8"	1/2	5/8"	2 25/32"	Bronze	Viega ProPress	ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213	00000000	000000
2	2 1/8"	1/2	5/8"	3 13/64"	Bronze	Viega ProPress	ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213	00000000	00000
2	2 1/8"	3/4	7/8"	3 21/64"	Bronze	Viega ProPress	ASME B16.51, ASME B31.1, ASME B31.3, ASME B31.9, NSF/ANSI 61, UL 213	00000000	00000

Replacement O-Rings

For Copper Tube Size	For Tube OD	O-Ring Material	Compatible With		Each
1/2	5/8"	EPDM Rubber	Viega ProPress	0000000	00000
3/4	7/8"	EPDM Rubber	Viega ProPress	0000000	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	00000000	000000000

Press-Connect Fittings for Drinking Water

Maximum Pressure: 160 psi @ 72° F
Temperature Range: -30° to 180° F
Tubing: Use with hard polyethylene plastic or copper
Specifications Met: IAPMO Listed, NSF/ANSI 61

Connect drinking water lines with ease—these one-piece fittings have a built-in sleeve that crimps onto tubing for a leak-tight connection that doesn’t require heat or soldering. Each fitting has a viewing hole to prevent installation errors and ensure it’s fully inserted before installing them. Press them onto polyethylene tubing, also known as Viega PEX tubing, using a crimping tool (sold separately). Choose a crimping tool with a grip color that’s the same as your fitting’s ring color. They meet NSF/ANSI 61 for drinking water systems.

Fittings are IAPMO (International Association for Plumbing and Mechanical Officials) certified to comply with product performance standards. They also comply with the UPC (Uniform Plumbing Code) for installation and repair of plumbing systems.

Bronze fittings are strong and resist corrosion.

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

Straight Reducers, Female Press-Connect Tube

Tube Connection (A)			Tube Connection (B)
Copper Tube Size	For Tube OD	Ring Color	Copper Tube Size	For Tube OD	Ring Color	Material	Lg.		Each
1/2	5/8"	Yellow	3/4	7/8"	Blue	Bronze	1 3/8"	0000000	00000
3/4	7/8"	Blue	1	1 1/8"	Orange	Bronze	1 37/64"	0000000	00000

Inline Tee Reducers, Female Press-Connect Tube

Inline tees are also known as branch tees.

Tube Connection (A)			Tube Connection (B)
Copper Tube Size	For Tube OD	Ring Color	Copper Tube Size	For Tube OD	Ring Color	Material		Each
3/4	7/8"	Blue	1/2	5/8"	Yellow	Bronze	0000000	000000
1	1 1/8"	Orange	1/2	5/8"	Yellow	Bronze	0000000	00000
1	1 1/8"	Orange	3/4	7/8"	Blue	Bronze	0000000	00000

Crimping Tools for Polyethylene Tubing

For Copper Tube Size	For Tube OD	Grip Color	Lg.	Material	Grip Material		Each
1/2	5/8"	Yellow	15 3/4"	Steel	Plastic	0000000	0000000
3/4	7/8"	Blue	15 3/4"	Steel	Plastic	000000	000000
1	1 1/8"	Orange	18 3/8"	Steel	Plastic	0000000	000000