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WattsASME Section XIII Hot Water Pressure Relief Valves

WATTS RELIEF VALVE: NPTF x NPTF, 1 1/4 in x 1 1/2 in, Iron

The Watts 418AD8 is an ASME Section XIII hot water pressure relief valve with 1 1/4 in x 1 1/2 in NPTF x NPTF connections, constructed of iron, and rated for a maximum operating pressure of 30 psi (MPN F383025).

SKU 3G-OTH-442528

Brand
Watts
Item
RELIEF VALVE: NPTF x NPTF, 1 1/4 in x 1 1/2 in, Iron
Category
ASME Section XIII Hot Water Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
F383025
Type
1 1/4 in x 1 1/2 in, Iron
Max. Op Pressure
30 psi
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Watts 418AD8 is an ASME Section XIII hot water pressure relief valve with 1 1/4 in x 1 1/2 in NPTF x NPTF connections, constructed of iron, and rated for a maximum operating pressure of 30 psi (MPN F383025).

Frequently Asked Questions

What is the Watts F383025 relief valve used for?

The Watts F383025 is an ASME Section XIII hot water pressure relief valve used to protect water heaters and boilers from overpressure. It automatically opens at its set pressure to discharge excess water, preventing system damage. Common in commercial and industrial hot water systems.

What are the specifications of the Watts F383025 relief valve?

The Watts F383025 is a 1 1/4 in x 1 1/2 in NPTF x NPTF iron relief valve with a maximum operating pressure of 30 psi. It is ASME Section XIII certified for hot water service. The valve body is constructed from iron for durability in industrial applications.

Where to buy the Watts F383025 relief valve worldwide?

3G Electric supplies the Watts F383025 relief valve worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time. We source genuine Watts components for international buyers.

How to install the Watts F383025 relief valve?

Install the Watts F383025 relief valve in the hot water system discharge line with the arrow on the body pointing in the flow direction. Use pipe thread sealant on the NPTF connections. Ensure the discharge pipe is routed to a safe drain and is not blocked. Follow local plumbing codes.

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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