Watts Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze
The WATTS Relief Valve (MPN 3/4 174A 150 FS) is an ASME Section XIII hot water pressure relief valve with 3/4 in x 3/4 in FNPTF connections in a bronze body, rated for a maximum operating pressure of 150 psi. 3G…
SKU 3G-OTH-442461
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Product Description
The WATTS Relief Valve (MPN 3/4 174A 150 FS) is an ASME Section XIII hot water pressure relief valve with 3/4 in x 3/4 in FNPTF connections in a bronze body, rated for a maximum operating pressure of 150 psi. 3G Electric interprets this demand and delivers genuine industrial equipment across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.
Frequently Asked Questions
What is the Watts 3/4 174A 150 FS relief valve used for?
The Watts 3/4 174A 150 FS is an ASME Section XIII hot water pressure relief valve used in commercial and industrial hydronic systems. It protects boilers, water heaters, and storage tanks from overpressure by automatically opening at a set pressure, preventing catastrophic failure in heating and process applications.
What are the specifications of the Watts 3/4 174A 150 FS relief valve?
This Watts relief valve has a 3/4 inch FNPTF x 3/4 inch FNPTF connection, a bronze body, and a maximum operating pressure of 150 psi. It is ASME Section XIII certified for hot water service. The manufacturer part number is 3/4 174A 150 FS, and it is designed for reliable overpressure protection.
Where to buy the Watts 3/4 174A 150 FS relief valve worldwide?
You can source the Watts 3/4 174A 150 FS 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; we supply genuine Watts components for commercial and industrial applications.
How to install a Watts 3/4 174A 150 FS relief valve?
Install the Watts 3/4 174A 150 FS relief valve in the hot water system's designated tapping, ensuring the discharge piping is directed to a safe drain. Use thread sealant on the FNPTF connections and tighten to manufacturer torque specs. Never install a shutoff valve between the relief valve and the system. Test operation after installation.
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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.















