Watts Relief Valve: FNPTF x FNPTF, 1 in x 1 in, Copper Silicon Alloy
The WATTS Relief Valve (MPN 1 LF174A 75 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, 1 in x 1 in size, constructed from copper silicon alloy, and rated for 150 psi…
SKU 3G-OTH-442477
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Product Description
The WATTS Relief Valve (MPN 1 LF174A 75 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, 1 in x 1 in size, constructed from copper silicon alloy, and rated for 150 psi maximum operating pressure. 3G Electric interprets customer demand and delivers this genuine industrial part across 14 departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.
Frequently Asked Questions
What is the Watts LF174A relief valve used for?
The Watts LF174A is an ASME Section XIII hot water pressure relief valve used in commercial and industrial hydronic systems. It protects water heaters, boilers, and storage tanks from overpressure by automatically opening at its set pressure. Typical applications include heating plants, process water systems, and pressure vessels requiring reliable overpressure protection.
What are the specifications of the Watts LF174A relief valve?
The Watts LF174A has 1 in FNPTF x 1 in FNPTF connections, a copper silicon alloy body, and a maximum operating pressure of 150 psi. It is an ASME Section XIII hot water pressure relief valve. The manufacturer part number is 1 LF174A 75 FS. This valve is designed for hot water service and meets ASME code requirements.
Where to buy the Watts LF174A relief valve worldwide?
You can source the Watts LF174A relief valve through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time. As a neutral sourcing partner, we provide this valve without being an authorized distributor of Watts.
How to install a Watts LF174A relief valve?
Install the Watts LF174A in the hot water system's tapping with the valve stem vertical or within 45 degrees of vertical. Apply pipe thread sealant to the male threads, tighten to manufacturer torque specs, and route the discharge pipe to a safe drain. Never install a shutoff valve between the relief valve and the system. Follow local codes and ASME guidelines.
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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.
