Watts Pressure Relief Valve: MNPT x FNPT, 3/4 in x 3/4 in, Brass
The WATTS Pressure Relief Valve (MPN 3/4 3L-150) is an ASME Section XIII hot water pressure relief valve with 3/4 in MNPT x FNPT connections in a brass body, rated for a maximum operating pressure of 150 psi. 3G…
SKU 3G-OTH-442455
Also listed as: 343L150 · 3 4 3L 150 · 3-4-3L-150
Local availability & support
- 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 3L-150) is an ASME Section XIII hot water pressure relief valve with 3/4 in MNPT x FNPT connections in a brass body, rated for a maximum operating pressure of 150 psi. 3G Electric sources this genuine industrial valve across 14 departments, with specialist expertise in combustion, pumps, and controls to ensure the right solution for your application.
Frequently Asked Questions
What is a Watts pressure relief valve used for?
A Watts pressure relief valve protects hot water heating systems from overpressure. It automatically opens when system pressure exceeds 150 psi, discharging water to prevent equipment damage or rupture. Common in commercial and industrial boiler applications.
What are the specifications of the Watts 3/4 3L-150 pressure relief valve?
The Watts 3/4 3L-150 is an ASME Section XIII hot water pressure relief valve. It has 3/4 inch MNPT x FNPT connections, a brass body, and a maximum operating pressure of 150 psi. It is designed for hot water service only.
Where to buy Watts pressure relief valves worldwide?
3G Electric supplies Watts pressure relief valves worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on the Watts 3/4 3L-150.
How to install a Watts pressure relief valve?
Install the Watts valve in the hot water system discharge piping with the arrow on the body pointing in the flow direction. Use pipe dope on male threads, avoid overtightening, and ensure the discharge pipe terminates in a safe, visible location per local codes.
Used in
Common applications for WattsWatts Products
3G Electric supplies Watts asme section xiii hot water pressure relief valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
