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Watts Boiler Pressure Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze - ASME Section XIII Hot Water Pressure Relief Valves
WattsASME Section XIII Hot Water Pressure Relief Valves

Watts Boiler Pressure Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze

The WATTS Boiler Pressure Relief Valve (MPN F274428) is an ASME Section XIII hot water pressure relief valve in a 3/4 in x 3/4 in FNPTF x FNPTF bronze configuration, with a maximum operating pressure of 20 psi. 3G…

SKU 3G-OTH-442456

Brand
Watts
Item
Boiler Pressure Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze
Category
ASME Section XIII Hot Water Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
F274428
Type
3/4 in x 3/4 in, Bronze
Max. Op Pressure
20 psi
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Boiler Pressure Relief Valve (MPN F274428) is an ASME Section XIII hot water pressure relief valve in a 3/4 in x 3/4 in FNPTF x FNPTF bronze configuration, with a maximum operating pressure of 20 psi. 3G Electric interprets this demand and delivers the genuine WATTS valve, backed by our specialist depth in controls across 14 industrial departments.

Frequently Asked Questions

What is a Watts boiler pressure relief valve used for?

A Watts boiler pressure relief valve protects hot-water heating systems from overpressure. It automatically opens when system pressure exceeds 20 psi, discharging water to prevent boiler damage or rupture. These ASME Section XIII valves are essential for residential and commercial hydronic heating safety.

What are the specifications of the Watts F274428 pressure relief valve?

The Watts F274428 is a 3/4 in FNPTF x 3/4 in FNPTF bronze boiler pressure relief valve with a maximum operating pressure of 20 psi. It is ASME Section XIII rated for hot-water service. The bronze body resists corrosion, and the FNPTF connections allow direct threading into standard boiler fittings.

Where to buy Watts pressure relief valves worldwide?

3G Electric supplies Watts pressure relief valves 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 the Watts F274428 or other ASME-rated relief valves. We source and deliver to any country.

How to install a Watts boiler pressure relief valve?

Install the Watts valve with the sensing element immersed in the boiler top or side tapping. Use pipe dope on the FNPTF threads, tighten to 25-35 ft-lb, and route the discharge pipe downward to a safe drain. Never cap or plug the outlet. Test operation after installation by lifting the manual lever.

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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