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

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

The WATTS Pressure 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 size and constructed from Copper Silicon Alloy (MPN 0121522).

SKU 3G-OTH-442521

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

Watts
Manufacturer Part Number
0121522
Type
1 1/4 in x 1 1/4 in, Copper Silicon Alloy
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Pressure 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 size and constructed from Copper Silicon Alloy (MPN 0121522).

Frequently Asked Questions

What is a Watts pressure relief valve used for?

A Watts pressure relief valve protects hot water systems from overpressure. It automatically opens when pressure exceeds a safe limit, preventing tank or piping failure. Common in commercial and residential boilers, water heaters, and hydronic heating systems.

What are the specifications of the Watts 0121522 pressure relief valve?

The Watts 0121522 is an ASME Section XIII hot water pressure relief valve. It has 1 1/4 inch FNPTF x FNPTF connections and a copper silicon alloy body. The manufacturer part number is 0121522, and the SKU is 162A03.

Where to buy Watts pressure relief valves worldwide?

3G Electric supplies Watts pressure relief valves worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on the Watts 0121522 or other models.

How to install a Watts pressure relief valve?

Install the Watts valve in the hot water system's designated tapping, ensuring the discharge pipe is directed to a safe drain. Use thread sealant on the FNPTF connections. Do not cap or plug the outlet. Test operation after installation by lifting the lever briefly.

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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