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Watts 3/4 100XL8-150/210 ASME Section IV Temperature & Pressure - ASME Section IV Temperature & Pressure Relief Valves
WattsASME Section IV Temperature & Pressure Relief Valves

Watts 3/4 100XL8-150/210 ASME Section IV Temperature & Pressure

The WATTS Temperature and Pressure Relief Valve is an ASME Section IV temperature and pressure relief valve with a 3/4 in MNPT x 3/4 in FNPT connection size. The valve features a brass body and is identified by…

SKU 3G-OTH-437110

Also listed as: 34100XL8150210 · 3 4 100XL8 150 210 · 3-4-100XL8-150-210

Brand
Watts
Item
3/4 100XL8-150/210 ASME Section IV Temperature & Pressure
Category
ASME Section IV 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 100XL8-150/210
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 is an ASME Section IV temperature and pressure relief valve with a 3/4 in MNPT x 3/4 in FNPT connection size. The valve features a brass body and is identified by manufacturer part number 3/4 100XL8-150/210.

Frequently Asked Questions

What is the WATTS 3/4 100XL8-150/210 temperature and pressure relief valve used for?

The WATTS 3/4 100XL8-150/210 is an ASME Section IV temperature and pressure relief valve designed to protect water heaters and boilers from excessive temperature or pressure. It automatically opens to discharge water when internal conditions exceed safe limits, preventing equipment damage or failure.

What are the specifications of the WATTS 3/4 100XL8-150/210 valve?

This WATTS valve has a brass body with a 3/4 in MNPT x 3/4 in FNPT connection size. The manufacturer part number is 3/4 100XL8-150/210. It is an ASME Section IV temperature and pressure relief valve, suitable for use on hot water storage tanks and heating boilers.

Where to buy the WATTS 3/4 100XL8-150/210 valve worldwide?

You can source the WATTS 3/4 100XL8-150/210 valve through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this brass temperature and pressure relief valve.

How to install the WATTS 3/4 100XL8-150/210 temperature and pressure relief valve?

Install the WATTS valve vertically in the hot water outlet line or on the heater shell, with the sensing element immersed in the top 6 inches of water. Ensure the discharge pipe is directed downward and terminates near a floor drain. Never install a shutoff valve between the heater and relief valve.

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 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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Brass temperature and pressure relief valve with 3/4 in MNPT inlet and 3/4 in FNPT outlet. ASME Section IV rated for use on hot water storage tanks and heating boilers to relieve excess temperature or pressure
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This ASME Section IV temperature and pressure relief valve is constructed with a copper silicon alloy body and features 3/4 in male NPT inlet and 3/4 in female NPT outlet connections. It is designed to automatically relieve excess temperature or pressure in water heaters and storage tanks, helping prevent system failures in hydronic applications
This ASME Section IV temperature and pressure relief valve features a bronze body with 3/4 in MNPT x 3/4 in FNPT connections. It is designed to automatically relieve excess temperature or pressure in water heaters and storage tanks, helping prevent system failure in hydronic applications
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This ASME Section IV temperature and pressure relief valve features a bronze body with 3/4 in MNPT x 3/4 in FNPT connections. It is designed to automatically relieve excess temperature or pressure in water heaters and storage tanks, helping prevent system failure in hydronic applications
This Watts pressure relief valve is designed for hot water heating systems, opening automatically when system pressure exceeds 150 psi to discharge water and prevent overpressure damage. It features a brass body with 3/4 in MNPT x FNPT connections and complies with ASME Section XIII. Typical applications include commercial and industrial boiler systems
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This Watts pressure relief valve is designed for hot water heating systems, opening automatically when system pressure exceeds 150 psi to discharge water and prevent overpressure damage. It features a brass body with 3/4 in MNPT x FNPT connections and complies with ASME Section XIII. Typical applications include commercial and industrial boiler systems
Copper alloy pressure relief valve with 3/4 in MNPT x 3/4 in FNPT connections, rated for 125 psi maximum operating pressure. Certified to ASME Section IV for hot water service. Used to protect water heaters and boilers from overpressure in hydronic heating systems
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This brass-bodied temperature and pressure relief valve has 3/4 in male NPT inlet and 3/4 in female NPT outlet connections. It is rated to ASME Section IV standards for overpressure and overtemperature protection in water heating systems, such as hot water tanks and boilers
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