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Watts Temperature and Pressure Relief Valve: MNPT x FNPT, 3/4 in x 3/4 in Connection Size - ASME Section IV Temperature & Pressure Relief Valves
WattsASME Section IV Temperature & Pressure Relief Valves

Watts Temperature and Pressure Relief Valve: MNPT x FNPT, 3/4 in x 3/4 in Connection Size

The WATTS 100XL-4 is an ASME Section IV Temperature & Pressure Relief Valve with a 3/4 in MNPT x 3/4 in FNPT connection and a brass body. This valve is designed for overpressure and overtemperature protection in…

SKU 3G-OTH-437102

Brand
Watts
Item
Temperature and Pressure Relief Valve: MNPT x FNPT, 3/4 in x 3/4 in Connection Size
Category
ASME Section IV Temperature & Pressure Relief Valves
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Technical Specifications

Watts
Manufacturer Part Number
100XL-4
Type
Brass
Body Material
Brass
Connection Size
3/4 in x 3/4 in
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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WATTS 100XL-4 is an ASME Section IV Temperature & Pressure Relief Valve with a 3/4 in MNPT x 3/4 in FNPT connection and a brass body. This valve is designed for overpressure and overtemperature protection in water heating systems.

Frequently Asked Questions

What is the WATTS 100XL-4 Temperature and Pressure Relief Valve used for?

The WATTS 100XL-4 is an ASME Section IV temperature and pressure relief valve designed to protect water heating systems from overpressure and overtemperature conditions. It is commonly installed on commercial and residential hot water tanks and boilers to prevent catastrophic failure.

What are the specifications of the WATTS 100XL-4 valve?

The WATTS 100XL-4 has a brass body with 3/4 in MNPT x 3/4 in FNPT connections. It is an ASME Section IV rated temperature and pressure relief valve, suitable for overpressure and overtemperature protection in water heating systems. The manufacturer part number is 100XL-4.

Where to buy the WATTS 100XL-4 worldwide?

3G Electric supplies the WATTS 100XL-4 temperature and pressure relief valve to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this brass-bodied ASME Section IV valve.

How to install a WATTS 100XL-4 temperature and pressure relief valve?

Install the WATTS 100XL-4 in the designated tapping on the water heater or boiler, ensuring the valve is oriented vertically with the discharge piping directed to a safe drain. Use thread sealant on the MNPT connection and do not cap or plug the outlet. Follow local plumbing codes and the manufacturer's instructions.

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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