Watts Relief Valve: FNPTF x FNPTF, 1 1/2 in x 1 1/2 in, Bronze
The WATTS Relief Valve (SKU 3G-OTH-442499) is an ASME Section XIII Hot Water Pressure Relief Valve, type FNPTF x FNPTF, in a 1 1/2 in x 1 1/2 in bronze configuration with a maximum operating pressure of 150 psi (MPN…
SKU 3G-OTH-442499
Also listed as: 112174A150FS · 1 1 2 174A 150 FS · 1-1-2-174A-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 (SKU 3G-OTH-442499) is an ASME Section XIII Hot Water Pressure Relief Valve, type FNPTF x FNPTF, in a 1 1/2 in x 1 1/2 in bronze configuration with a maximum operating pressure of 150 psi (MPN 1-1/2 174A 150 FS). 3G Electric interprets demand for this WATTS valve across 14 industrial departments — and we supply far more than is listed — with specialist depth in combustion, pumps and controls as an authorised distributor for brands including Watts, Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump and FBR.
Frequently Asked Questions
What is a Watts 174A relief valve used for?
The Watts 174A is an ASME Section XIII hot water pressure relief valve used to protect boilers and water heaters from overpressure. It automatically opens at a set pressure to discharge excess water, preventing system damage. This bronze, 1 1/2 in FNPTF model is rated for 150 psi maximum operating pressure.
What are the specifications of the Watts 1-1/2 174A 150 FS relief valve?
This Watts relief valve has a 1 1/2 in FNPTF x FNPTF connection, bronze body, and a maximum operating pressure of 150 psi. It is an ASME Section XIII hot water pressure relief valve, part number 1-1/2 174A 150 FS. The valve is designed for overpressure protection in hot water systems.
Where to buy a Watts 174A relief valve worldwide?
3G Electric supplies the Watts 174A relief valve to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote on the 1-1/2 174A 150 FS model. We source genuine Watts components for your application.
How to install a Watts 174A pressure relief valve?
Install the Watts 174A relief valve in the hot water system's discharge line, ensuring the FNPTF connections are properly sealed with thread tape. The valve must be oriented vertically with the discharge port unobstructed. Always follow local codes and the manufacturer's instructions for safe overpressure protection.
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.
