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Watts Pressure Relief Valve: FNPT x FNPT, 3/4 in x 3/4 in, Copper Silicon Alloy - ASME Section IV Hot Water Pressure Relief Valves
WattsASME Section IV Hot Water Pressure Relief Valves

Watts Pressure Relief Valve: FNPT x FNPT, 3/4 in x 3/4 in, Copper Silicon Alloy

The WATTS Pressure Relief Valve (MPN F121475) is an ASME Section IV hot water pressure relief valve with 3/4 in x 3/4 in FNPT connections, constructed from copper silicon alloy and measuring 4 1/2 in overall height.

SKU 3G-OTH-429340

Brand
Watts
Item
Pressure Relief Valve: FNPT x FNPT, 3/4 in x 3/4 in, Copper Silicon Alloy
Category
ASME Section IV Hot Water Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
F121475
Type
3/4 in x 3/4 in, Copper Silicon Alloy
Overall Ht
4 1/2 in
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Pressure Relief Valve (MPN F121475) is an ASME Section IV hot water pressure relief valve with 3/4 in x 3/4 in FNPT connections, constructed from copper silicon alloy and measuring 4 1/2 in overall height.

Frequently Asked Questions

What is the Watts F121475 pressure relief valve used for?

The Watts F121475 is an ASME Section IV hot water pressure relief valve designed to protect water heaters and boilers from overpressure. It automatically releases water when pressure exceeds safe limits, preventing system damage. Common in commercial and residential hydronic heating systems.

What are the specifications of the Watts F121475 valve?

The Watts F121475 has 3/4 in FNPT x 3/4 in FNPT connections, a copper silicon alloy body, and an overall height of 4 1/2 in. It is an ASME Section IV rated hot water pressure relief valve. The manufacturer part number is F121475, and it is made by Watts.

Where to buy the Watts F121475 pressure relief valve worldwide?

3G Electric supplies the Watts F121475 pressure relief valve to customers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and a quote for your region.

How to install a Watts F121475 pressure relief valve?

Install the Watts F121475 valve in the hot water system's tapping, ensuring the discharge pipe is directed to a safe drain. Use thread sealant on the FNPT connections and tighten to manufacturer torque specs. Never install a shutoff valve between the relief valve and the system. 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 iv 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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