Water Heater Valves | McMaster-Carr

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18 Products

Fast-Acting Temperature- and Pressure-Relief Valves for Hot Water

Also known as T & P valves, these open when water temperature reaches 210° F or at the set pressure. They are commonly used with water heaters and storage tanks. All spring fully open at a water temperature of 210° F or the set pressure and remain open until the system is restored below the set point. For remote discharge, valves have a threaded relief port to attach a drain line. Body is bronze for durability and a long service life.

NPT Female Inlet and Relief Port

Female ×

Female

ASME BPVC.IV Certified—Valves with _3/4 to 2 pipe size meet ASME Code Section IV for hot water.

Inlet			Relief		Set Pressure
Pipe Size	Location	Max. Pressure, psi	Port Pipe Size	Port Location	Range, psi	Temp., ° F	Shape	Hot Water Flow Cap., BTU/hr	Insertion Lg.	Valve Ht.	Overall Ht.	For Use With	Test Mechanism	Valve Type	Certification		Each







			Bronze Body—Silicone Seal

			3/4	Bottom	125	3/4	Side	125	210	90° Elbow	185,000	3"	5 7/8"	8 7/8"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9761K13	0000000


			3/4	Bottom	150	3/4	Side	150	210	90° Elbow	185,000	3"	5 7/8"	8 7/8"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9761K14	000000

NPT Male Inlet and NPT Female Relief Port


Male × Female	Male × Female With Extended Body

Extended Body—Valves with an extended body are designed for installation through thick insulation.

ASME BPVC.IV Certified—Valves with _3/4 to 2 pipe size meet ASME Code Section IV for hot water.

Inlet			Relief		Set Pressure
Pipe Size	Location	Max. Pressure, psi	Port Pipe Size	Port Location	Range, psi	Temp., ° F	Shape	Hot Water Flow Cap., BTU/hr	Features	For Insulation Thk.	Insertion Lg.	Valve Ht.	Overall Ht.	For Use With	Test Mechanism	Valve Type	Certification		Each







			Bronze Body—Silicone Seal

			1/2	Bottom	150	1/2	Side	150	210	90° Elbow	15,000	—	—	1 7/16"	3 1/4"	4 11/16"	Water	Lever	Pop Safety	CSA Certified	9761K61	000000


			3/4	Bottom	150	3/4	Side	150	210	90° Elbow	95,000	—	—	1 7/16"	3 1/4"	4 11/16"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9761K62	00000
			3/4	Bottom	150	3/4	Side	150	210	90° Elbow	105,000	—	—	3"	3 1/4"	6 1/4"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9761K63	00000
			3/4	Bottom	165	3/4	Side	150	210	90° Elbow	105,000	Extended Body	1 1/4"	2 1/2"	4 3/4"	7 1/4"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9777K22	00000
			3/4	Bottom	165	3/4	Side	150	210	90° Elbow	1,438,000	Extended Body	1 5/8"	3 1/2"	6 5/8"	10 1/8"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9777K32	000000
			3/4	Bottom	165	3/4	Side	150	210	90° Elbow	1,438,000	Extended Body	3 5/8"	5"	8 5/8"	13 5/8"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9777K42	000000
			1	Bottom	165	1	Side	150	210	90° Elbow	2,135,000	—	—	2"	6 1/4"	8 1/4"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9777K52	000000
			1	Bottom	165	1	Side	150	210	90° Elbow	2,135,000	—	—	4"	6 1/4"	10 1/4"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9777K62	000000
			2	Bottom	150	1 1/2	Side	150	210	90° Elbow	1,200,000	—	—	3"	8 1/2"	11 1/2"	Water	Lever	Pop Safety	ASME BPVC.IV, CSA Certified	9761K17	000000

ASME-Code Fast-Acting Pressure-Relief Valves for Hot Water

Protect your water-heating system with these valves that meet ASME Code Section IV for hot water heaters and boilers. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. All have a threaded relief port that can be attached to a drain line for remote discharge. Valves have a durable bronze body for a long service life.

	Inlet		Relief
	Pipe Size	Location	Port Pipe Size	Port Location	Overall Ht.	Test Mechanism	Valve Type	For Use With	Certification	Temp. Range, ° F	Choose a Set Pressure, psi		Each
NPT Female Inlet and Relief Port







				Bronze Body—Silicone Seal

				3/4	Bottom	3/4	Side	5 5/16"	Lever	Pop Safety	Water	ASME BPVC.IV	33 to 250	30 , 50 , 60 , 75 , 100 , 125 , 150	4702K49	0000000


				3/4	Bottom	1	Side	5 5/16"	Lever	Pop Safety	Water	ASME BPVC.IV	33 to 250	30 , 50 , 60 , 75 , 100 , 125 , 150	4702K51	000000
				1	Bottom	1	Side	6 3/4"	Lever	Pop Safety	Water	ASME BPVC.IV	33 to 250	30 , 50 , 60 , 75 , 100 , 125 , 150	4702K61	000000
				1	Bottom	1 1/4	Side	6 3/4"	Lever	Pop Safety	Water	ASME BPVC.IV	33 to 250	30 , 50 , 60 , 75 , 100 , 125 , 150	4702K52	000000
				1 1/4	Bottom	1 1/2	Side	8 3/8"	Lever	Pop Safety	Water	ASME BPVC.IV	33 to 250	30 , 50 , 60 , 75 , 100 , 125 , 150	4702K53	000000
				1 1/2	Bottom	2	Side	10 13/16"	Lever	Pop Safety	Water	ASME BPVC.IV	33 to 250	30 , 50 , 60 , 75 , 100 , 125 , 150	4702K54	000000
				2	Bottom	2	Side	14"	Lever	Pop Safety	Water	ASME BPVC.IV	33 to 250	30 , 50 , 60 , 75 , 100 , 125 , 150	4702K62	000000