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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 Temperature and Pressure Relief Valve (SKU 3AZA4) 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…

SKU 3G-OTH-437106

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
3/4 100XL 125
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 Temperature and Pressure Relief Valve (SKU 3AZA4) 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 3AZA4.

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
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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