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-150) is an ASME Section IV hot water pressure relief valve with 3/4 in MNPT x FNPT connections in a copper alloy body, rated for a maximum operating pressure of 125 psi…
SKU 3G-OTH-429365
Also listed as: 34LF3L150 · 3 4 LF3L 150 · 3-4-LF3L-150
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- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The WATTS Pressure Relief Valve (MPN 3/4 LF3L-150) is an ASME Section IV hot water pressure relief valve with 3/4 in MNPT x FNPT connections in a copper alloy body, rated for a maximum operating pressure of 125 psi. 3G Electric interprets this demand and delivers the genuine OEM part, backed by specialist expertise across 14 industrial departments — including combustion, pumps, and controls — to ensure you get the right solution, not just a catalog listing.
Frequently Asked Questions
What is the WATTS 3/4 LF3L-150 pressure relief valve used for?
The WATTS 3/4 LF3L-150 is an ASME Section IV hot water pressure relief valve used to protect water heaters and boilers from overpressure. It automatically opens at 125 psi to discharge excess pressure, preventing system damage. Common in commercial and residential hydronic heating systems.
What are the specifications of the WATTS 3/4 LF3L-150?
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-150.
Where to buy the WATTS 3/4 LF3L-150 worldwide?
3G Electric supplies the WATTS 3/4 LF3L-150 pressure relief valve worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.
How to install a WATTS pressure relief valve?
Install the WATTS valve in the hot water system's tapping, ensuring the discharge pipe is directed to a safe drain. Use thread sealant on the MNPT connection. Do not cap or plug the outlet. Test operation after installation by lifting the lever briefly. Follow local plumbing codes.
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Common applications for WattsWatts 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.
