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Watts 3/4 100XL 125 ASME Section IV Temperature & Pressure Relief Valve - ASME Section IV Temperature & Pressure Relief Valves
WattsASME Section IV Temperature & Pressure Relief Valves

Watts 3/4 100XL 125 ASME Section IV Temperature & Pressure Relief Valve

The WATTS Temperature and Pressure Relief Valve (SKU 3G-OTH-437106) is an ASME Section IV temperature and pressure relief valve with a brass body. It features a 3/4 in MNPT x 3/4 in FNPT connection size and is…

SKU 3G-OTH-437106

Also listed as: 34100XL125 · 3 4 100XL 125 · 3-4-100XL-125

Brand
Watts
Item
3/4 100XL 125 ASME Section IV Temperature & Pressure Relief Valve
Part Number
3/4 100XL 125
Category
ASME Section IV Temperature & Pressure Relief Valves
Available to Order
Also known as:3/4 100XL 125Watts
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Technical Specifications

Watts
Manufacturer Part Number
3/4 100XL 125
Type
Brass
Body Material
Brass
Connection Size
3/4 in x 3/4 in

Technical Documents

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

Product Description

The WATTS Temperature and Pressure Relief Valve (SKU 3G-OTH-437106) is an ASME Section IV temperature and pressure relief valve with a brass body. It features a 3/4 in MNPT x 3/4 in FNPT connection size and is identified by manufacturer part number 3/4 100XL 125.

Frequently Asked Questions

What is the WATTS 3/4 100XL 125 temperature and pressure relief valve used for?

This ASME Section IV valve protects water heaters and storage tanks from excessive temperature or pressure. It automatically opens to relieve steam or water when internal conditions exceed safe limits, preventing catastrophic failures in residential and commercial hydronic systems.

What are the specifications of the WATTS 3/4 100XL 125 valve?

The valve has a brass body with 3/4 in MNPT x 3/4 in FNPT connections. It is an ASME Section IV temperature and pressure relief valve, manufactured by WATTS under part number 3/4 100XL 125. The SKU is 3G-OTH-437106.

Where to buy the WATTS 3/4 100XL 125 valve worldwide?

3G Electric supplies the WATTS 3/4 100XL 125 valve worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install a WATTS temperature and pressure relief valve?

Install the valve in the tank's designated T&P port with the sensing element immersed. Use thread sealant on the 3/4 in MNPT connection. Route the discharge pipe downward, terminating 6-12 inches above a floor drain. Never cap or plug the outlet.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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Watts Products

3G Electric supplies Watts asme section iv 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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