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Watts Relief Valve: FNPTF x FNPTF, 1 1/4 in x 1 1/4 in, Bronze - ASME Section XIII Hot Water Pressure Relief Valves
WattsASME Section XIII Hot Water Pressure Relief Valves

Watts Relief Valve: FNPTF x FNPTF, 1 1/4 in x 1 1/4 in, Bronze

The WATTS Relief Valve is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, available in a 1 1/4 in x 1 1/4 in bronze configuration. It has a maximum operating pressure of 150 psi…

SKU 3G-OTH-442489

Brand
Watts
Item
Relief Valve: FNPTF x FNPTF, 1 1/4 in x 1 1/4 in, Bronze
Category
ASME Section XIII Hot Water Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
1-1/4 174A 125 FS
Type
1 1/4 in x 1 1/4 in, Bronze
Max. Op Pressure
150 psi
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Relief Valve is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, available in a 1 1/4 in x 1 1/4 in bronze configuration. It has a maximum operating pressure of 150 psi (MPN 1-1/4 174A 125 FS). 3G Electric sources this genuine industrial component across 14 departments, with specialist expertise in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

What is the Watts 1-1/4 174A 125 FS relief valve used for?

The Watts 174A relief valve is used on hot water heating systems and storage tanks to protect against overpressure. It automatically opens when system pressure exceeds 150 psi, preventing equipment damage. This ASME Section XIII rated valve is common in commercial and industrial hydronic applications.

What are the specifications of the Watts 174A relief valve?

The Watts 174A is a 1 1/4 in FNPTF x 1 1/4 in FNPTF bronze relief valve with a maximum operating pressure of 150 psi. It is ASME Section XIII rated for hot water service. The manufacturer part number is 1-1/4 174A 125 FS, and the body material is bronze.

Where to buy Watts 174A relief valves worldwide?

3G Electric supplies the Watts 174A relief valve worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this ASME-rated bronze valve. We source and deliver to any country.

How to install a Watts 174A relief valve?

Install the Watts 174A in the hot water system's tapping with the valve stem vertical or within 45 degrees of vertical. Apply pipe sealant to the FNPTF threads and tighten to manufacturer torque specs. Ensure the discharge piping is directed to a safe drain and is not blocked. Test operation after installation.

Used in

Common applications for Watts
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

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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