ASSE-Listed Regulators | McMaster-Carr

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About Pressure-Regulating Valves

Find a regulator that’s compatible with your gas, matches the CGA number on your tank, and has twice the operating pressure of your application’s normal range.

Pressure-Regulating Valves for Drinking Water


Valves	Valves With Union Fitting

These valves meet NSF/ANSI 61 for use in drinking water systems. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have a gauge port. An internal strainer traps debris. Body is bronze for durability and a long service life.

Union Fitting—Valves with union fitting disassemble for easy installation and removal.

	Inlet			Outlet					Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	For Use With	Temp. Range, ° F	Certification	Food Industry Std.		Each
NPT Female







				Bronze Body—Buna-N Diaphragm and Seal with Internal Strainer

				1/2	Side	400	1/2	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	3 1/2"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K11	0000000


				3/4	Side	400	3/4	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	3 1/2"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K12	000000
				1	Side	400	1	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	4"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K13	000000




						Bronze Body—Buna-N Diaphragm and Seal with Internal Strainer and Union Fitting

						1/2	Side	400	1/2	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	4 3/8"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K21	000000


						3/4	Side	400	3/4	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	4 7/16"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K22	000000
						1	Side	400	1	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	4 15/16"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K23	000000
						1 1/4	Side	400	1 1/4	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	6 3/16"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K24	000000
						1 1/2	Side	300	1 1/2	Side	25 to 75	Screw	No	1/4	Bottom	NPT Female	6 5/16"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K25	000000
						2	Side	300	2	Side	25 to 75	Screw	No	1/4	Bottom	NPT Female	6 1/4"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K26	000000

Quick-Set Pressure-Regulating Valves for Water

Change outlet pressure without using a gauge—turn the dial to adjust the outlet pressure in 5 or 10 psi increments. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. They also have an internal strainer to trap debris. Union fittings on both ends of the valves disassemble for easy valve installation and removal. All of these valves meet Canadian safety standards for pressure-reducing valves. Some also meet American and international plumbing safety and performance standards.

Stainless Steel Body—Stainless steel valves resist corrosion better than brass valves.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Certification	Specs. Met		Each
NPT Female







				Stainless Steel Body—EPDM Diaphragm and Seal

				3/4	Side	300	3/4	Side	20 to 90	Dial	6 11/16"	Water	33 to 180	ASSE 1003 Listed, CSA Certified, IAPMO Listed	CAN/CSA-B356	45805K823	0000000


				1	Side	300	1	Side	20 to 90	Dial	6 51/64"	Water	33 to 180	ASSE 1003 Listed, CSA Certified, IAPMO Listed	CAN/CSA-B356	45805K824	000000