We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
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

Brand
Watts
Item
Temperature and Pressure Relief Valve: Section XIII ASME Section
Category
ASME Section XIII 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
3/4 LF40L-3-125/210 FS
Type
MNPTF x FNPTF
Body Material
Copper Silicon Alloy
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 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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF (MPN 3/4 LF40XL-5-125/210FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF (MPN 3/4 LF40XL-5-125/210FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPTF x FNPTF (MPN 1 LF140X-6-150/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPTF x FNPTF (MPN 1 LF140X-6-150/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPTF x FNPTF (MPN 1 LFN240X-6-125/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPTF x FNPTF (MPN 1 LFN240X-6-125/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPT x FNPT, Bronze (MPN 3/4 LF40XL-5-150/210FS). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPT x FNPT, Bronze (MPN 3/4 LF40XL-5-150/210FS). Key specifications — Brand: WATTS; Body Material: Bronze.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF (MPN 2 LF342-3-150/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF (MPN 2 LF342-3-150/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF (MPN 2 LF342X-8-150/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF (MPN 2 LF342X-8-150/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.

More from Watts

View all Watts parts →
WATTS Pressure Safety Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, Copper Silicon Alloy (MPN 0121602). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Pressure Safety Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, Copper Silicon Alloy (MPN 0121602). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, Bronze (MPN 1 N240X-6-125/210 FS). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, Bronze (MPN 1 N240X-6-125/210 FS). Key specifications — Brand: WATTS; Body Material: Bronze.
WATTS Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, 1 in x 1 in Connection Size (MPN F121508). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, 1 in x 1 in Connection Size (MPN F121508). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, Bronze (MPN 1 140X-6-150/210 FS). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, Bronze (MPN 1 140X-6-150/210 FS). Key specifications — Brand: WATTS; Body Material: Bronze.
WATTS Pressure Safety Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, Copper Silicon Alloy (MPN 0121604). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Pressure Safety Relief Valve: Section XIII ASME Section, FNPTF x FNPTF, Copper Silicon Alloy (MPN 0121604). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF, Bronze (MPN 3/4 40XL-5-150/210 FS). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF, Bronze (MPN 3/4 40XL-5-150/210 FS). Key specifications — Brand: WATTS; Body Material: Bronze.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF (MPN 1 LF40XL-4-125/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, MNPTF x FNPTF (MPN 1 LF40XL-4-125/210 FS). Key specifications — Brand: WATTS; Body Material: Copper Silicon Alloy.
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPT x FNPT, Bronze (MPN F278030). Key specifications — Brand: WATTS; Body Material: Bronze.
Watts
WATTS Temperature and Pressure Relief Valve: Section XIII ASME Section, FNPT x FNPT, Bronze (MPN F278030). Key specifications — Brand: WATTS; Body Material: Bronze.