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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 F383742) is an ASME Section IV hot water pressure relief valve with FNPTF x FNPTF connections, available in a 1 1/2 in x 2 in iron configuration and rated for a maximum operating…

SKU 3G-OTH-429330

Also listed as: F 383742 · F-383742

Brand
Watts
Item
ASME Section IV Hot Water Pressure Relief Valve
Part Number
F383742
Category
ASME Section IV Hot Water Pressure Relief Valves
Available to Order
Also known as:F383742Watts
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Technical Specifications

Watts
Manufacturer Part Number
F383742
Type
1 1/2 in x 2 in, Iron
Max. Op Pressure
75 psi

Technical Documents

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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Pressure Relief Valve (MPN F383742) is an ASME Section IV hot water pressure relief valve with FNPTF x FNPTF connections, available in a 1 1/2 in x 2 in iron configuration and rated for a maximum operating pressure of 75 psi.

Frequently Asked Questions

What is a Watts pressure relief valve used for?

A Watts pressure relief valve protects hot water heating systems from overpressure. It automatically opens when pressure exceeds 75 psi, preventing equipment damage. This ASME Section IV valve is commonly installed on boilers and storage tanks in commercial and industrial facilities.

What are the specifications of the Watts F383742 pressure relief valve?

The Watts F383742 is a 1 1/2 in x 2 in FNPTF x FNPTF iron pressure relief valve with a maximum operating pressure of 75 psi. It is ASME Section IV rated for hot water service. The iron body provides durability in high-temperature industrial applications.

Where to buy Watts pressure relief valves worldwide?

3G Electric supplies Watts pressure relief valves like the F383742 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial sourcing partner, we provide genuine Watts parts with reliable lead times and technical support.

How to install a Watts pressure relief valve?

Install the Watts valve in the hot water system's discharge piping with the arrow pointing away from the vessel. Ensure the discharge line is no smaller than the valve outlet and terminates safely. Never install a shutoff valve between the relief valve and the system.

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
Watts
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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