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Watts 1-1/4 174A 030 FS ASME Section XIII Hot Water Pressure Relief Valve - ASME Section XIII Hot Water Pressure Relief Valves
WattsASME Section XIII Hot Water Pressure Relief Valves

Watts 1-1/4 174A 030 FS ASME Section XIII Hot Water Pressure Relief Valve

The WATTS Relief Valve (SKU 3G-OTH-442546) is an ASME Section XIII Hot Water Pressure Relief Valve with FNPTF x FNPTF connections, sized 1 1/4 in x 1 1/4 in in bronze, rated for a maximum operating pressure of 150…

SKU 3G-OTH-442546

Also listed as: 114174A030FS · 1 1 4 174A 030 FS · 1-1-4-174A-030-FS

Brand
Watts
Item
1-1/4 174A 030 FS ASME Section XIII Hot Water Pressure Relief Valve
Part Number
1-1/4 174A 030 FS
Category
ASME Section XIII Hot Water Pressure Relief Valves
Available to Order
Also known as:1-1/4 174A 030 FSWatts
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Technical Specifications

Watts
Manufacturer Part Number
1-1/4 174A 030 FS
Type
1 1/4 in x 1 1/4 in, Bronze
Max. Op Pressure
150 psi

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Relief Valve (SKU 3G-OTH-442546) is an ASME Section XIII Hot Water Pressure Relief Valve with FNPTF x FNPTF connections, sized 1 1/4 in x 1 1/4 in in bronze, rated for a maximum operating pressure of 150 psi (MPN 1-1/4 174A 030 FS). 3G Electric interprets this demand and sources the genuine WATTS part across 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the Watts 174A relief valve used for?

The Watts 174A is an ASME Section XIII hot water pressure relief valve used in commercial and industrial hydronic heating systems. It protects boilers and water heaters from overpressure by automatically opening at a set pressure, preventing equipment damage and ensuring safe operation.

What are the specifications of the Watts 1-1/4 174A 030 FS relief valve?

This Watts relief valve has FNPTF x FNPTF connections, 1 1/4 in x 1 1/4 in size, and a bronze body. It is rated for 150 psi maximum operating pressure and complies with ASME Section XIII standards for hot water service. The manufacturer part number is 1-1/4 174A 030 FS.

Where to buy Watts relief valves worldwide?

3G Electric supplies Watts relief valves worldwide, handling full logistics and customs clearance for international orders. As a global industrial equipment distributor since 1990, we source and deliver genuine Watts products to any country. Contact our team for a quote and delivery timeline.

How to install a Watts 174A pressure relief valve?

Install the Watts 174A in the hot water outlet line of the boiler or water heater, with the valve stem vertical. Use pipe thread sealant on the FNPTF connections and ensure no debris blocks the discharge. Never install a shutoff valve between the relief valve and the system. Test operation after installation.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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Watts 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.

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