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Watts 3/4 LF40XL-5-125/210FS ASME Section XIII Temperature & - ASME Section XIII Temperature & Pressure Relief Valves
WattsASME Section XIII Temperature & Pressure Relief Valves

Watts 3/4 LF40XL-5-125/210FS ASME Section XIII Temperature &

The WATTS Temperature and Pressure Relief Valve is an ASME Section XIII valve with a Copper Silicon Alloy body. It is identified by manufacturer part number 3/4 LF40XL-5-125/210FS and features MNPTF x FNPTF connections.

SKU 3G-OTH-430670

Also listed as: 34LF40XL5125210FS · 3 4 LF40XL 5 125 210FS · 3-4-LF40XL-5-125-210FS

Brand
Watts
Item
3/4 LF40XL-5-125/210FS ASME Section XIII Temperature &
Category
ASME Section XIII Temperature & 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
3/4 LF40XL-5-125/210FS
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. It is identified by manufacturer part number 3/4 LF40XL-5-125/210FS and features MNPTF x FNPTF connections.

Frequently Asked Questions

What is the WATTS 3/4 LF40XL-5-125/210FS temperature and pressure relief valve used for?

This WATTS valve is used to protect water heaters and storage tanks from excessive temperature or pressure. It automatically opens to relieve pressure or discharge hot water when conditions exceed safe limits, preventing equipment damage or failure in commercial and industrial hot-water systems.

What are the specifications of the WATTS 3/4 LF40XL-5-125/210FS valve?

This ASME Section XIII valve has a Copper Silicon Alloy body and MNPTF x FNPTF connections. The manufacturer part number is 3/4 LF40XL-5-125/210FS. It is designed for temperature and pressure relief applications in water systems, meeting ASME Section XIII standards for safety and performance.

Where to buy the WATTS 3/4 LF40XL-5-125/210FS valve worldwide?

3G Electric supplies the WATTS 3/4 LF40XL-5-125/210FS valve 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 ASME Section XIII relief valve.

How to install the WATTS 3/4 LF40XL-5-125/210FS temperature and pressure relief valve?

Install the WATTS valve in the designated tapping of the water heater or tank, ensuring the sensing element extends into the tank. Connect piping to the outlet to safely discharge water. Follow local codes and the manufacturer's instructions for proper orientation and support. Always test after installation.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with MNPTF x FNPTF connections. It is designed to automatically relieve excess pressure or temperature in hot-water systems, protecting water heaters and storage tanks from overpressure conditions
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This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with MNPTF x FNPTF connections. It is designed to automatically relieve excess pressure or temperature in hot-water systems, protecting water heaters and storage tanks from overpressure conditions
This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with FNPTF x FNPTF connections. It is designed to automatically relieve excess temperature or pressure in hot water systems, protecting storage tanks and heaters from overpressure conditions
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This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with FNPTF x FNPTF connections. It is designed to automatically relieve excess temperature or pressure in hot water systems, protecting storage tanks and heaters from overpressure conditions
This bronze temperature and pressure relief valve is rated under ASME Section XIII. It features male NPT by female NPT connections. The valve automatically opens to relieve excess temperature or pressure, protecting water heaters and storage tanks in commercial and industrial hot water systems
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This bronze temperature and pressure relief valve is rated under ASME Section XIII. It features male NPT by female NPT connections. The valve automatically opens to relieve excess temperature or pressure, protecting water heaters and storage tanks in commercial and industrial hot water systems
This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with FNPTF x FNPTF connections. It is designed to automatically relieve excess temperature or pressure in hot-water systems, protecting water heaters and storage tanks from overpressure conditions
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This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with FNPTF x FNPTF connections. It is designed to automatically relieve excess temperature or pressure in hot-water systems, protecting water heaters and storage tanks from overpressure conditions
This ASME Section XIII temperature and pressure relief valve features a bronze body with MNPTF x FNPTF connections. It is designed to protect water heaters and storage tanks from excessive temperature or pressure by automatically opening when set limits are exceeded. The bronze construction provides corrosion resistance in potable water and hydronic systems
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This ASME Section XIII temperature and pressure relief valve features a bronze body with MNPTF x FNPTF connections. It is designed to protect water heaters and storage tanks from excessive temperature or pressure by automatically opening when set limits are exceeded. The bronze construction provides corrosion resistance in potable water and hydronic systems
This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with MNPTF x FNPTF connections. It is designed to automatically discharge water when excessive temperature or pressure occurs, protecting water heaters and storage tanks in commercial and industrial hot water systems
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This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with MNPTF x FNPTF connections. It is designed to automatically discharge water when excessive temperature or pressure occurs, protecting water heaters and storage tanks in commercial and industrial hot water systems

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This Watts temperature and pressure relief valve is constructed with a copper silicon alloy body and features FNPTF x FNPTF connections. It is designed for use in heating, boiler, and process systems requiring ASME Section XIII compliance, providing overpressure protection by automatically relieving excess pressure
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This Watts temperature and pressure relief valve is constructed with a copper silicon alloy body and features FNPTF x FNPTF connections. It is designed for use in heating, boiler, and process systems requiring ASME Section XIII compliance, providing overpressure protection by automatically relieving excess pressure
This bronze-bodied temperature and pressure relief valve is rated under ASME Section XIII. It features FNPTF x FNPTF connections and is designed to automatically discharge excess fluid when system pressure or temperature exceeds set limits, protecting water heaters and boilers in commercial and industrial applications
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This bronze-bodied temperature and pressure relief valve is rated under ASME Section XIII. It features FNPTF x FNPTF connections and is designed to automatically discharge excess fluid when system pressure or temperature exceeds set limits, protecting water heaters and boilers in commercial and industrial applications
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This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with FNPTF x FNPTF connections in a 1 in x 1 in size. It is used in plumbing and industrial systems to protect against overpressure and overtemperature conditions in boilers, pressure vessels, and similar equipment
Bronze-bodied temperature and pressure relief valve with FNPTF x FNPTF connections. Designed to protect water heaters and storage tanks from excessive temperature or pressure by automatically discharging water when internal conditions exceed safe limits. Suitable for commercial and industrial hot-water systems
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Bronze-bodied temperature and pressure relief valve with FNPTF x FNPTF connections. Designed to protect water heaters and storage tanks from excessive temperature or pressure by automatically discharging water when internal conditions exceed safe limits. Suitable for commercial and industrial hot-water systems
This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with FNPTF x FNPTF connections. It is used for overpressure protection in industrial systems such as boilers and pressure vessels
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This ASME Section XIII temperature and pressure relief valve features a copper silicon alloy body with FNPTF x FNPTF connections. It is used for overpressure protection in industrial systems such as boilers and pressure vessels
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This bronze temperature and pressure relief valve is ASME Section XIII rated. It features MNPTF x FNPTF connections and is used to protect hot-water systems from overpressure and overtemperature conditions
ASME Section XIII temperature and pressure relief valve with a copper silicon alloy body. Features MNPTF x FNPTF connections. Used to protect equipment from overpressure and excessive heat in industrial systems
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ASME Section XIII temperature and pressure relief valve with a copper silicon alloy body. Features MNPTF x FNPTF connections. Used to protect equipment from overpressure and excessive heat in industrial systems
This bronze-bodied temperature and pressure relief valve is designed for overpressure and overtemperature protection in hot water systems. It features FNPT x FNPT connections and complies with ASME Section XIII standards. The valve automatically opens to relieve excess pressure or temperature, helping to prevent equipment damage
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This bronze-bodied temperature and pressure relief valve is designed for overpressure and overtemperature protection in hot water systems. It features FNPT x FNPT connections and complies with ASME Section XIII standards. The valve automatically opens to relieve excess pressure or temperature, helping to prevent equipment damage