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Watts Temperature and Pressure Relief Valve: Section XIII ASME Section - ASME Section XIII Temperature & Pressure Relief Valves
WattsASME Section XIII Temperature & Pressure Relief Valves

Watts Temperature and Pressure Relief Valve: Section XIII ASME Section

The WATTS Temperature and Pressure Relief Valve is an ASME Section XIII valve with a Copper Silicon Alloy body. This model, MPN 3/4 LF40L-3-125/210 FS, features MNPTF x FNPTF connections.

SKU 3G-OTH-430660

Also listed as: 34LF40L3125210FS · 3 4 LF40L 3 125 210 FS · 3-4-LF40L-3-125-210-FS

Brand
Watts
Item
Temperature and Pressure Relief Valve: Section XIII ASME Section
Category
ASME Section XIII Temperature & Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
3/4 LF40L-3-125/210 FS
Type
MNPTF x FNPTF
Body Material
Copper Silicon Alloy

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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS Temperature and Pressure Relief Valve is an ASME Section XIII valve with a Copper Silicon Alloy body. This model, MPN 3/4 LF40L-3-125/210 FS, features MNPTF x FNPTF connections.

Frequently Asked Questions

What is the WATTS 3/4 LF40L-3-125/210 FS temperature and pressure relief valve used for?

This WATTS valve protects water heaters and storage tanks from excessive temperature or pressure. It automatically opens to relieve pressure or thermal expansion, preventing catastrophic failure. Common in commercial and industrial hot-water systems, it meets ASME Section XIII safety standards for reliable overpressure protection.

What are the specifications of the WATTS 3/4 LF40L-3-125/210 FS valve?

This WATTS valve has a Copper Silicon Alloy body with MNPTF x FNPTF connections. The manufacturer part number is 3/4 LF40L-3-125/210 FS. It is certified to ASME Section XIII, ensuring it meets rigorous safety and performance requirements for temperature and pressure relief applications.

Where to buy the WATTS 3/4 LF40L-3-125/210 FS valve worldwide?

3G Electric supplies the WATTS 3/4 LF40L-3-125/210 FS valve to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source genuine WATTS parts and support your procurement from order to arrival.

How to install a WATTS temperature and pressure relief valve?

Install the WATTS valve in the tank's designated T&P port, ensuring the sensing element extends into the tank. Use thread sealant on the MNPTF x FNPTF connections. Pipe the discharge to a safe drain, avoiding any restrictions. Always follow local codes and the manufacturer's instructions for proper 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 temperature & 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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