T & P Valves | McMaster-Carr

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Inlet Pipe Size

1/2

3/4

Relief Port Pipe Size

1/2

3/4

1 1/2

Hot Water Flow Capacity

Set Pressure

Maximum Inlet Pressure

Pipe Size

Insertion Length

Inlet Gender

Overall Height

Certification

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Not Compliant

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Material

Gender

Height

Valve Height

Maximum Pressure

Insulation Thickness

11 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	0000000	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	0000000	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	0000000	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	0000000	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	0000000	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	0000000	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	0000000	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	0000000	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	0000000	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	0000000	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	0000000	000000