Watts Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Copper Silicon Alloy
The WATTS Relief Valve (MPN 3/4 LF174A 150 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, 3/4 in x 3/4 in size, constructed from copper silicon alloy, and rated for a…
SKU 3G-OTH-442464
Also listed as: 34LF174A150FS · 3 4 LF174A 150 FS · 3-4-LF174A-150-FS
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
Need installation or engineering help?
Ask a question
Product Description
The WATTS Relief Valve (MPN 3/4 LF174A 150 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, 3/4 in x 3/4 in size, constructed from copper silicon alloy, and rated for a maximum operating pressure of 150 psi.
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 to discharge excess water.
What are the specifications of the Watts 3/4 LF174A 150 FS?
This Watts relief valve has 3/4 inch FNPTF x FNPTF connections, a copper silicon alloy 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 LF174A 150 FS.
Where to buy the Watts LF174A relief valve worldwide?
3G Electric supplies the Watts LF174A relief valve worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time for the 3/4 LF174A 150 FS model.
How to install a Watts pressure relief valve?
Install the Watts LF174A in the hot water system's tapping with the valve stem vertical or within 45 degrees of vertical. Use pipe dope on the male threads, avoid overtightening, and route the discharge pipe to a safe drain. Never install a shutoff valve between the relief valve and the system.
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.
