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Watts 3/4 LF3L-075 ASME Section IV Hot Water Pressure Relief Valve - ASME Section IV Hot Water Pressure Relief Valves
WattsASME Section IV Hot Water Pressure Relief Valves

Watts 3/4 LF3L-075 ASME Section IV Hot Water Pressure Relief Valve

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

Also listed as: 34LF3L075 · 3 4 LF3L 075 · 3-4-LF3L-075

Brand
Watts
Item
3/4 LF3L-075 ASME Section IV Hot Water Pressure Relief Valve
Part Number
3/4 LF3L-075
Category
ASME Section IV Hot Water Pressure Relief Valves
Available to Order
Also known as:3/4 LF3L-075Watts
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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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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
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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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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This bronze pressure relief valve is designed for hot water service in hydronic heating systems. It features 3/4 in x 3/4 in FNPT connections and a maximum operating pressure of 20 psi. Certified to ASME Section IV, it automatically opens at set pressure to discharge excess water, protecting water heaters and boilers from overpressure
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This bronze pressure relief valve is designed for hot water service in hydronic heating systems. It features 3/4 in x 3/4 in FNPT connections and a maximum operating pressure of 20 psi. Certified to ASME Section IV, it automatically opens at set pressure to discharge excess water, protecting water heaters and boilers from overpressure

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