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

The WATTS Relief Valve (MPN 1 740 030 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, sized 1 in x 1 1/4 in in iron construction, rated for a maximum operating pressure of…

SKU 3G-OTH-442483

Also listed as: 1740030FS · 1-740-030-FS

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

Watts
Manufacturer Part Number
1 740 030 FS
Type
1 in x 1 1/4 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 Relief Valve (MPN 1 740 030 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, sized 1 in x 1 1/4 in in iron construction, rated for a maximum operating pressure of 75 psi.

Frequently Asked Questions

What is a Watts 1 740 030 FS relief valve used for?

The Watts 1 740 030 FS is an ASME Section XIII hot water pressure relief valve used to protect boilers and water heaters from overpressure. It automatically opens at 75 psi to discharge excess pressure, preventing system damage. 3G Electric supplies this genuine Watts valve for industrial heating applications worldwide.

What are the specifications of the Watts 1 740 030 FS relief valve?

This Watts relief valve has a 1 in FNPTF inlet and 1 1/4 in FNPTF outlet, with a maximum operating pressure of 75 psi. The body is iron. It is ASME Section XIII rated for hot water service. 3G Electric sources this genuine Watts part for global industrial customers.

Where to buy a Watts 1 740 030 FS relief valve worldwide?

3G Electric supplies the Watts 1 740 030 FS relief valve to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote on this genuine Watts ASME Section XIII hot water pressure relief valve.

How to install a Watts 1 740 030 FS relief valve?

Install the Watts 1 740 030 FS relief valve in the hot water system discharge line with the inlet connected to the boiler or heater tapping. Ensure the outlet is piped to a safe drain location. Follow local codes and the manufacturer's instructions for proper orientation and support.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/2 740 030 FS)
Watts
WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/2 740 030 FS)
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 1 in, Iron, 75 psi Max. Op Pressure, 5 5/8 in Overall Ht (MPN 3/4 740 030 FS)
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WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 1 in, Iron, 75 psi Max. Op Pressure, 5 5/8 in Overall Ht (MPN 3/4 740 030 FS)
WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/2 740 075 FS)
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WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/2 740 075 FS)
WATTS Relief Valve: FNPTF x FNPTF, 1 in x 1 1/4 in, Iron, 75 psi Max. Op Pressure (MPN 1 740 075 FS)
Watts
WATTS Relief Valve: FNPTF x FNPTF, 1 in x 1 1/4 in, Iron, 75 psi Max. Op Pressure (MPN 1 740 075 FS)
WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/2 740 050 FS)
Watts
WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/2 740 050 FS)
WATTS Relief Valve: FNPTF x FNPTF, 1 in x 1 1/4 in, Iron, 75 psi Max. Op Pressure (MPN 1 740 050 FS)
Watts
WATTS Relief Valve: FNPTF x FNPTF, 1 in x 1 1/4 in, Iron, 75 psi Max. Op Pressure (MPN 1 740 050 FS)

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WATTS RELIEF VALVE: NPTF x NPTF, 3/4 in x 3/4 in, Iron, 20 psi Max. Op Pressure, 3 1/2 in Overall Ht (MPN F358553)
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WATTS Relief Valve: FNPTF x FNPTF, 1 1/4 in x 1 1/2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/4 740 030 FS)