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Watts Pressure Relief Valve: MNPT x FNPT, 3/4 in x 3/4 in, Copper Alloy - ASME Section IV Hot Water Pressure Relief Valves
WattsASME Section IV Hot Water Pressure Relief Valves

Watts Pressure Relief Valve: MNPT x FNPT, 3/4 in x 3/4 in, Copper Alloy

The WATTS Pressure Relief Valve (MPN 3/4 LF3L-075) is an ASME Section IV hot water pressure relief valve with MNPT x FNPT connections, available in a 3/4 in x 3/4 in copper alloy construction. It is rated for a…

SKU 3G-OTH-429353

Brand
Watts
Item
Pressure Relief Valve: MNPT x FNPT, 3/4 in x 3/4 in, Copper Alloy
Category
ASME Section IV Hot Water Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
3/4 LF3L-075
Type
3/4 in x 3/4 in, Copper Alloy
Max. Op Pressure
125 psi
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Pressure Relief Valve (MPN 3/4 LF3L-075) is an ASME Section IV hot water pressure relief valve with MNPT x FNPT connections, available in a 3/4 in x 3/4 in copper alloy construction. It is rated for a maximum operating pressure of 125 psi.

Frequently Asked Questions

What is the WATTS 3/4 LF3L-075 pressure relief valve used for?

The WATTS 3/4 LF3L-075 is an ASME Section IV hot water pressure relief valve used in commercial and residential hydronic heating systems. It protects boilers and water heaters from overpressure by automatically opening at its set pressure, preventing equipment damage and ensuring safe operation.

What are the specifications of the WATTS 3/4 LF3L-075?

This WATTS pressure relief valve has a 3/4 in MNPT x 3/4 in FNPT connection, a copper alloy body, and a maximum operating pressure of 125 psi. It is ASME Section IV certified for hot water service. The manufacturer part number is 3/4 LF3L-075.

Where to buy the WATTS 3/4 LF3L-075 worldwide?

3G Electric supplies the WATTS 3/4 LF3L-075 pressure relief valve to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the WATTS 3/4 LF3L-075 pressure relief valve?

Install the WATTS valve in the boiler or water heater tapping with the inlet connected to the system and the outlet piped to a safe discharge location. Use thread sealant on male threads, tighten to manufacturer torque specs, and test for leaks. Always follow local codes and the WATTS installation manual.

Used in

Common applications for Watts
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

Watts Products

3G Electric supplies Watts asme section iv hot water pressure relief valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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