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Watts Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze - 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 3/4 in, Bronze

The WATTS Relief Valve is an ASME Section XIII hot water pressure relief valve, type FNPTF x FNPTF, in a 3/4 in x 3/4 in bronze configuration with a maximum operating pressure of 20 psi (MPN 3/4 174A 030 FS). 3G…

SKU 3G-OTH-442457

Also listed as: 34174A030FS · 3 4 174A 030 FS · 3-4-174A-030-FS

Brand
Watts
Item
Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze
Category
ASME Section XIII Hot Water Pressure Relief Valves
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Watts
Manufacturer Part Number
3/4 174A 030 FS
Type
3/4 in x 3/4 in, Bronze
Max. Op Pressure
20 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, type FNPTF x FNPTF, in a 3/4 in x 3/4 in bronze configuration with a maximum operating pressure of 20 psi (MPN 3/4 174A 030 FS). 3G Electric interprets demand and delivers this genuine industrial valve across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is a Watts 174A relief valve used for?

The Watts 174A is an ASME Section XIII hot water pressure relief valve used to protect water heaters and boilers from overpressure. It automatically opens at 20 psi to discharge excess pressure, preventing system damage. 3G Electric supplies this bronze FNPTF valve for industrial heating applications worldwide.

What are the specifications of the Watts 3/4 174A 030 FS relief valve?

This Watts relief valve has 3/4 in FNPTF x 3/4 in FNPTF connections, a bronze body, and a maximum operating pressure of 20 psi. It is ASME Section XIII rated for hot water service. The manufacturer part number is 3/4 174A 030 FS. 3G Electric sources this genuine Watts valve for global delivery.

Where to buy a Watts 174A relief valve worldwide?

3G Electric supplies the Watts 174A relief valve worldwide, handling full logistics and customs clearance for international orders. As a global industrial sourcing partner, we provide genuine Watts valves with part number 3/4 174A 030 FS. Contact us for pricing and lead time to your location.

How to install a Watts 174A hot water pressure relief valve?

Install the Watts 174A in the hot water system's relief valve tapping with the flow arrow pointing away from the vessel. Use pipe thread sealant on the 3/4 in FNPTF connections. Discharge piping must be downward and terminate within 6 inches of the floor. 3G Electric supplies this valve for industrial boiler and heater protection.

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, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 075 FS)
Watts
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 075 FS)
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 100 FS)
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WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 100 FS)
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 125 FS)
Watts
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 125 FS)
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 150 FS)
Watts
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 150 FS)
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 050 FS)
Watts
WATTS Relief Valve: FNPTF x FNPTF, 3/4 in x 3/4 in, Bronze, 150 psi Max. Op Pressure (MPN 3/4 174A 050 FS)
WATTS Relief Valve: FNPTF x FNPTF, 1 in x 1 in, Bronze, 40 psi Max. Op Pressure, 5 3/4 in Overall Ht (MPN 1 174A 050 FS)
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WATTS Relief Valve: FNPTF x FNPTF, 1 in x 1 in, Bronze, 40 psi Max. Op Pressure, 5 3/4 in Overall Ht (MPN 1 174A 050 FS)

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WATTS Relief Valve: FNPT x FNPT, 1 in x 1 in, Bronze, 94 psi Max. Op Pressure, 5 3/4 in Overall Ht (MPN 1 174A 125 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)
WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 1 1/2 in, Bronze, 150 psi Max. Op Pressure (MPN 1-1/2 174A 150 FS)
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WATTS Relief Valve: FNPTF x FNPTF, 1 1/2 in x 1 1/2 in, Bronze, 150 psi Max. Op Pressure (MPN 1-1/2 174A 150 FS)