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Watts Relief Valve: FNPTF x FNPTF, 2 in x 2 in, Bronze - ASME Section XIII Hot Water Pressure Relief Valves
WattsASME Section XIII Hot Water Pressure Relief Valves

Watts Relief Valve: FNPTF x FNPTF, 2 in x 2 in, Bronze

SKU 3G-OTH-442507

Brand
Watts
Item
Relief Valve: FNPTF x FNPTF, 2 in x 2 in, Bronze
Category
ASME Section XIII Hot Water Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
2 174A 125 FS
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the Watts 2 174A 125 FS relief valve used for?

The Watts 2 174A 125 FS is an ASME Section XIII hot water pressure relief valve used in commercial and industrial hydronic systems. It automatically opens to relieve excess pressure, protecting boilers, water heaters, and piping from overpressure damage. Typical applications include heating plants, process water loops, and steam-to-water heat exchangers.

What are the specifications of the Watts 2 174A 125 FS relief valve?

This Watts relief valve has a 2 in FNPTF x 2 in 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 2 174A 125 FS, and it is designed for overpressure protection in hydronic heating systems.

Where to buy the Watts 2 174A 125 FS relief valve worldwide?

3G Electric supplies the Watts 2 174A 125 FS relief valve worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this valve to any international destination.

How to install a Watts 2 174A 125 FS relief valve?

Install the Watts 2 174A 125 FS relief valve in the hot water system discharge line with the arrow on the body pointing in the flow direction. Use pipe thread sealant on the FNPTF connections and ensure the discharge piping is routed to a safe drain. Do not install a shutoff valve between the relief valve and the system.

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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