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Watts 3/4-in MNPT Brass Temperature and pressure relief valve

Name: Watts 3/4-in MNPT Brass Temperature and pressure relief valve
Brand: Watts
SKU: 5015172937
Price: 57.73 USD
Availability: InStock
Rating: 4 (1 reviews)

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This 3/4 inch extra extended shank temperature and pressure relief valve is used in water heater and hot water storage tank applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 105,000 BTU/hr. It features an extended shank for installation on water heaters with extra thick insulation as well as a brass body with NPT male inlet and NPT female outlet connections, unique thermostat with special thermo-bonded coating, and a test lever. It is suitable for water heaters with up to 3 inches (76.2 MM) of insulation. It is ASME rated and CSA listed. The temperature relief is 210 F (99 C), the pressure relief range is 75 to 150 psi (5.2 to 10.3 bar) and the standard pressure setting is 150 psi (10.55 bar).

Self closing safety valve for hot water heaters
Unique thermostat with special thermo-bonded coating
Bronze body construction
Stainless steel spring

General
Series Name	100XL	Inlet Thread Type	MNPT
Type	Temperature and pressure relief valve	Outlet Thread Type	FNPT
Material	Brass

Dimensions
Inlet Diameter	3/4-in	Outlet Diameter	3/4-in
Inlet Size in Inches	3/4-in

Features
Maximum Pressure	150 PSI

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	Complies with Federal Lead Guidelines	No

Warranty
Warranty	1-year limited

Miscellaneous
UNSPSC	40141600

Check out the Best Selling Pressure Relief Valves & Regulators on Lowes.com

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1 Customer Reviews

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I was in and out the store in a minute

Easy and really convenient

LowesmanMarch 2, 2026
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		Name	Current Item Watts3/4-in MNPT Brass Temperature and pressure relief valve
		Ratings	1
		Inlet Size in Inches	3/4-in
		Inlet Diameter	3/4-in
		Inlet Thread Type	MNPT
Watts10-Inch Blue Housing and Black PR Cap with 3/4-Inch Port and Pressure Relief Valve	Watts3/4-Inch Brass Self Closing Temperature and Pressure Relief Valve 150 psi 210 F Extended Shank Up to 2 1/2-Inch-Inchsulation	Watts3/4-in FNPT Bronze Pressure relief valve	Watts3/4-in FNPT Iron Pressure relief valve	Watts3/4-Inch Temperature and Pressure Relief Valve 4.75-Inch Shank	Watts3/4-Inch Brass Self Closing Temperature and Pressure Relief Valve 100 psi 180 F Extended Shank Up To 3-Inch-Inchsulation	Watts3/4-Inch Lead Free Self Closing Temperature and Pressure Relief Valve 150 psi 210 F Extended Shank Up to 2-Inch Insulation	Watts3/4-Inch Brass Poppet Type Pressure Relief Valve 150 psi Test Lever	Watts3/4-Inch Bronze Self Closing Temperature and Pressure Relief Valve 150 psi 210 degree F Extended Shank Up to 1 3/4-Inch-Inchsulation
			16
3/4-in	3/4-in	3/4-in	3/4-in	3/4-in	3/4-in	3/4-in	3/4-in	3/4-in
3/4-in	3/4-in	3/4-in	3/4-in	3/4-in	3/4-in	3/4-in	3/4-in	3/4-in
FNPT	MNPT	FNPT	FNPT	MNPT	MNPT	MNPT	MNPT	MNPT