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Watts Relief Valve: FNPTF x FNPTF, 1 in x 1 in, Copper Silicon Alloy - 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 in, Copper Silicon Alloy

The WATTS Relief Valve (MPN 1 LF174A 125 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, 1 in x 1 in size, constructed from copper silicon alloy, and rated for 150 psi…

SKU 3G-OTH-442479

Brand
Watts
Item
Relief Valve: FNPTF x FNPTF, 1 in x 1 in, Copper Silicon Alloy
Category
ASME Section XIII Hot Water Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
1 LF174A 125 FS
Type
1 in x 1 in, Copper Silicon Alloy
Max. Op Pressure
150 psi
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Relief Valve (MPN 1 LF174A 125 FS) is an ASME Section XIII hot water pressure relief valve with FNPTF x FNPTF connections, 1 in x 1 in size, constructed from copper silicon alloy, and rated for 150 psi maximum operating pressure. 3G Electric interprets this demand and delivers the genuine WATTS part across 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the Watts LF174A relief valve used for?

The Watts LF174A is an ASME Section XIII hot water pressure relief valve used in commercial and industrial hydronic systems. It protects water heaters, boilers, and storage tanks from overpressure by automatically discharging water when system pressure exceeds 150 psi.

What are the specifications of the Watts LF174A relief valve?

The Watts LF174A has 1 in FNPTF x 1 in FNPTF connections, a copper silicon alloy body, and a maximum operating pressure of 150 psi. It is ASME Section XIII certified for hot water service. The manufacturer part number is 1 LF174A 125 FS.

Where to buy the Watts LF174A relief valve worldwide?

3G Electric supplies the Watts LF174A 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-rated valve.

How to install a Watts LF174A relief valve?

Install the Watts LF174A in the hot water system's tapping, ensuring the valve's inlet is connected to the tank or heater. Orient the discharge piping downward, with no shutoff valves between the valve and the system. Follow local codes and the manufacturer's instructions 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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