Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Watts Automatic Temperature Gas Shutoff Valve: FNPT x FNPT - Non-Code Temperature & Pressure Relief Valves
WattsNon-Code Temperature & Pressure Relief Valves

Watts Automatic Temperature Gas Shutoff Valve: FNPT x FNPT

The WATTS Automatic Temperature Gas Shutoff Valve is a non-code temperature and pressure relief valve with FNPT x FNPT connections. It features a Copper Silicon Alloy body and is identified by manufacturer part…

SKU 3G-OTH-432648

Brand
Watts
Item
Automatic Temperature Gas Shutoff Valve: FNPT x FNPT
Category
Non-Code Temperature & Pressure Relief Valves
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Watts
Manufacturer Part Number
LFLLL210-5-M2
Body Material
Copper Silicon Alloy
Connection Size
1/2 in x 1/2 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The WATTS Automatic Temperature Gas Shutoff Valve is a non-code temperature and pressure relief valve with FNPT x FNPT connections. It features a Copper Silicon Alloy body and is identified by manufacturer part number LFLLL210-5-M2.

Frequently Asked Questions

What is the WATTS Automatic Temperature Gas Shutoff Valve used for?

The WATTS Automatic Temperature Gas Shutoff Valve is a non-code temperature and pressure relief valve designed to shut off gas flow when a preset temperature is exceeded. It is commonly used in residential and commercial water heating systems to prevent overheating and reduce fire risk.

What are the specifications of the WATTS LFLLL210-5-M2 valve?

The WATTS LFLLL210-5-M2 valve has a Copper Silicon Alloy body and FNPT x FNPT connections sized at 1/2 in x 1/2 in. It is a non-code temperature and pressure relief valve, identified by manufacturer part number LFLLL210-5-M2, and is designed for automatic gas shutoff on over-temperature.

Where to buy the WATTS LFLLL210-5-M2 valve worldwide?

3G Electric supplies the WATTS LFLLL210-5-M2 valve worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this WATTS valve to any country.

How to install the WATTS automatic temperature gas shutoff valve?

Install the WATTS valve in the gas supply line upstream of the appliance, ensuring flow direction matches the arrow on the body. Use thread sealant on the FNPT connections and tighten to manufacturer torque specs. Test for leaks after installation. Always follow local codes and the WATTS installation manual.

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 non-code temperature & pressure relief valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
WATTS Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in, Brass, 175 psi Max. Op Pressure, 180°F (MPN 1/2 530-FP). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in, Brass, 175 psi Max. Op Pressure, 180°F (MPN 1/2 530-FP). Key specifications — Brand: WATTS.
WATTS Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in, Brass, 175 psi Max. Op Pressure, 180°F (MPN 1/2 530-C). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in, Brass, 175 psi Max. Op Pressure, 180°F (MPN 1/2 530-C). Key specifications — Brand: WATTS.
WATTS Pressure Relief Valve: MNPTF x FNPTF, 1/2 in x 1/2 in, Brass, 125 psi Max. Op Pressure, 180°F (MPN 1/2 LF53-125). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Relief Valve: MNPTF x FNPTF, 1/2 in x 1/2 in, Brass, 125 psi Max. Op Pressure, 180°F (MPN 1/2 LF53-125). Key specifications — Brand: WATTS.
WATTS Pressure Relief Valve: MNPTF x FNPTF, 1/2 in x 1/2 in, Brass, 75 psi Max. Op Pressure, 180°F (MPN 1/2 LF53-75). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Relief Valve: MNPTF x FNPTF, 1/2 in x 1/2 in, Brass, 75 psi Max. Op Pressure, 180°F (MPN 1/2 LF53-75). Key specifications — Brand: WATTS.
WATTS Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in, Bronze, 175 psi Max. Op Pressure, 210°F (MPN 1/2 53L-175). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in, Bronze, 175 psi Max. Op Pressure, 210°F (MPN 1/2 53L-175). Key specifications — Brand: WATTS.

More from Watts

View all Watts parts
WATTS Automatic Temperature Gas Shutoff Valve: FNPT x FNPT, 1/2 in x 1/2 in Connection Size (MPN LFLL210-5-M2). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Automatic Temperature Gas Shutoff Valve: FNPT x FNPT, 1/2 in x 1/2 in Connection Size (MPN LFLL210-5-M2). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in Connection Size, Bronze (MPN 1/2 1XL-150210). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Temperature and Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in Connection Size, Bronze (MPN 1/2 1XL-150210). Key specifications — Brand: WATTS; Body Material: Bronze.
WATTS Temperature and Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in Connection Size (MPN 1/2 LF1XL-8 150-210). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Temperature and Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in Connection Size (MPN 1/2 LF1XL-8 150-210). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Automatic Temperature Gas Shutoff Valve: MNPT x FNPT, 3/4 in x 3/4 in Connection Size, Bronze (MPN LF210-5-M2). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Automatic Temperature Gas Shutoff Valve: MNPT x FNPT, 3/4 in x 3/4 in Connection Size, Bronze (MPN LF210-5-M2). Key specifications — Brand: WATTS; Body Material: Bronze.
WATTS Temperature and Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in Connection Size, Bronze (MPN 1/2 1XL- 8-150210). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Temperature and Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in Connection Size, Bronze (MPN 1/2 1XL- 8-150210). Key specifications — Brand: WATTS; Body Material: Bronze.
WATTS Temperature and Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in Connection Size (MPN 1/2 LF1XL 150-210). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Temperature and Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in Connection Size (MPN 1/2 LF1XL 150-210). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Automatic Temperature Gas Shutoff Valve: MNPT x FNPT, 3/4 in x 1/2 in Connection Size, Bronze (MPN LFL210-5-M2). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Automatic Temperature Gas Shutoff Valve: MNPT x FNPT, 3/4 in x 1/2 in Connection Size, Bronze (MPN LFL210-5-M2). Key specifications — Brand: WATTS; Body Material: Bronze.