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Watts Relief Valve: FNPTF x FNPTF, 3/4 in x 1 in, Iron, 75 psi Max. Op Pressure - ASME Section XIII Hot Water Pressure Relief Valves
WattsASME Section XIII Hot Water Pressure Relief Valves

Watts Relief Valve: FNPTF x FNPTF, 3/4 in x 1 in, Iron, 75 psi Max. Op Pressure

The WATTS Relief Valve is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, available in a 3/4 in x 1 in iron body. It has a maximum operating pressure of 75 psi and an overall…

SKU 3G-OTH-442474

Brand
Watts
Item
Relief Valve: FNPTF x FNPTF, 3/4 in x 1 in, Iron, 75 psi Max. Op Pressure
Category
ASME Section XIII Hot Water Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
3/4 740 075 FS
Type
3/4 in x 1 in, Iron
Overall Ht
5 5/8 in
Max. Op Pressure
75 psi
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Relief Valve is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, available in a 3/4 in x 1 in iron body. It has a maximum operating pressure of 75 psi and an overall height of 5 5/8 in (MPN 3/4 740 075 FS).

Frequently Asked Questions

What is the Watts 3/4 740 075 FS relief valve used for?

The Watts 3/4 740 075 FS is an ASME Section XIII hot water pressure relief valve used to protect water heaters and boilers from overpressure. It automatically opens at 75 psi to discharge excess pressure, preventing system damage. Common in commercial and industrial hot water systems.

What are the specifications of the Watts 3/4 740 075 FS relief valve?

This Watts relief valve has a 3/4 in FNPTF inlet and 1 in FNPTF outlet, a maximum operating pressure of 75 psi, and an overall height of 5 5/8 in. The body is iron. It is ASME Section XIII rated for hot water service. The manufacturer part number is 3/4 740 075 FS.

Where to buy the Watts 3/4 740 075 FS relief valve worldwide?

3G Electric supplies the Watts 3/4 740 075 FS relief valve 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. We source genuine Watts components for your project.

How to install a Watts hot water pressure relief valve?

Install the Watts relief valve with the inlet connected to the hot water system tapping and the outlet piped to a safe discharge location. Ensure the valve is upright and not obstructed. Follow local codes and the manufacturer's instructions. 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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