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Watts ASME Section IV Hot Water Pressure Relief Valve - ASME Section IV Hot Water Pressure Relief Valves
WattsASME Section IV Hot Water Pressure Relief Valves

Watts ASME Section IV Hot Water Pressure Relief Valve

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

Also listed as: F 121475 · F-121475

Brand
Watts
Item
ASME Section IV Hot Water Pressure Relief Valve
Part Number
F121475
Category
ASME Section IV Hot Water Pressure Relief Valves
Available to Order
Also known as:F121475Watts
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Watts
Manufacturer Part Number
F121475
Type
3/4 in x 3/4 in, Copper Silicon Alloy
Overall Ht
4 1/2 in

Technical Documents

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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
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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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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This bronze pressure relief valve is designed for hot water service in hydronic heating systems. It features 3/4 in x 3/4 in FNPT connections and a maximum operating pressure of 20 psi. Certified to ASME Section IV, it automatically opens at set pressure to discharge excess water, protecting water heaters and boilers from overpressure
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This bronze pressure relief valve is designed for hot water service in hydronic heating systems. It features 3/4 in x 3/4 in FNPT connections and a maximum operating pressure of 20 psi. Certified to ASME Section IV, it automatically opens at set pressure to discharge excess water, protecting water heaters and boilers from overpressure

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