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

The WATTS Relief Valve (MPN 1-1/2 740 030 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, sized 1 1/2 in x 2 in in iron, rated for a maximum operating pressure of 75 psi…

SKU 3G-OTH-442539

Also listed as: 112740030FS · 1 1 2 740 030 FS · 1-1-2-740-030-FS

Brand
Watts
Item
Relief Valve: FNPTF x FNPTF, 1 1/2 in x 2 in, Iron
Category
ASME Section XIII Hot Water Pressure Relief Valves
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Watts
Manufacturer Part Number
1-1/2 740 030 FS
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 Relief Valve (MPN 1-1/2 740 030 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, sized 1 1/2 in x 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 a WATTS 1-1/2 740 030 FS relief valve used for?

This WATTS ASME Section XIII hot water pressure relief valve is used to protect hot water heating systems and storage tanks from overpressure. It automatically opens at a set pressure to discharge excess water, preventing system damage or failure in commercial and industrial applications.

What are the specifications of the WATTS 1-1/2 740 030 FS relief valve?

The WATTS 1-1/2 740 030 FS is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, 1 1/2 in x 2 in size, and an iron body. Its maximum operating pressure is 75 psi. The manufacturer part number is 1-1/2 740 030 FS.

Where to buy WATTS 1-1/2 740 030 FS relief valves worldwide?

3G Electric supplies WATTS 1-1/2 740 030 FS relief valves worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this WATTS valve.

How to install a WATTS hot water pressure relief valve?

Install the WATTS relief valve in the hot water system discharge line with the arrow on the body pointing in the flow direction. Ensure the valve is upright and the discharge pipe is sized to handle full flow. Follow local codes and WATTS guidelines for safe operation.

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 1/4 in x 1 1/2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/4 740 030 FS)
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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)
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WATTS Relief Valve: FNPTF x FNPTF, 1 in x 1 1/4 in, Iron, 75 psi Max. Op Pressure (MPN 1 740 030 FS)
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WATTS Relief Valve: FNPTF x FNPTF, 2 in x 2 1/2 in, Iron, 75 psi Max. Op Pressure (MPN 2 740 075 FS)
WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/2 740 075 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 1/2 in x 2 in, Iron, 75 psi Max. Op Pressure (MPN 1-1/2 740 050 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 1-1/2 740 050 FS)

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