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Watts Relief Valve: FNPTF x FNPTF, 1 1/4 in x 1 1/2 in, Iron - ASME Section XIII Hot Water Pressure Relief Valves
WattsASME Section XIII Hot Water Pressure Relief Valves

Watts Relief Valve: FNPTF x FNPTF, 1 1/4 in x 1 1/2 in, Iron

The WATTS Relief Valve (MPN 1-1/4 740 075 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, sized 1 1/4 in x 1 1/2 in in iron, rated for a maximum operating pressure of 75…

SKU 3G-OTH-442498

Brand
Watts
Item
Relief Valve: FNPTF x FNPTF, 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
1-1/4 740 075 FS
Type
1 1/4 in x 1 1/2 in, Iron
Max. Op Pressure
75 psi
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Relief Valve (MPN 1-1/4 740 075 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, sized 1 1/4 in x 1 1/2 in in iron, rated for a maximum operating pressure of 75 psi. 3G Electric sources this genuine industrial safety component across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the Watts 1-1/4 740 075 FS relief valve used for?

The Watts 1-1/4 740 075 FS is an ASME Section XIII hot water pressure relief valve used in commercial and industrial hydronic systems. It protects boilers, water heaters, and storage tanks from overpressure by automatically releasing water when pressure exceeds the set limit.

What are the specifications of the Watts 1-1/4 740 075 FS relief valve?

This Watts relief valve has FNPTF x FNPTF connections in 1-1/4 in x 1-1/2 in sizes, a cast iron body, and a maximum operating pressure of 75 psi. It is ASME Section XIII certified for hot water service and carries the manufacturer part number 1-1/4 740 075 FS.

Where to buy the Watts 1-1/4 740 075 FS relief valve worldwide?

3G Electric supplies the Watts 1-1/4 740 075 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 on this ASME Section XIII valve.

How to install the Watts 1-1/4 740 075 FS relief valve?

Install the Watts relief valve in the hot water system's tapping with the sensing element immersed in the top 6 inches of the tank or piping. Ensure no shutoff valve is placed between the valve and the system. Pipe the discharge to a safe drain per local 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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