Watts Pressure Relief Valve: MNPT x FNPT, 1/2 in x 1/2 in, Copper Silicon Alloy
The WATTS Pressure Relief Valve (MPN 1/2 LF53L-150) is an ASME Section IV hot water pressure relief valve with 1/2 in MNPT x 1/2 in FNPT connections, constructed from copper silicon alloy and measuring 3 1/2 in…
SKU 3G-OTH-429364
Also listed as: 12LF53L150 · 1 2 LF53L 150 · 1-2-LF53L-150
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The WATTS Pressure Relief Valve (MPN 1/2 LF53L-150) is an ASME Section IV hot water pressure relief valve with 1/2 in MNPT x 1/2 in FNPT connections, constructed from copper silicon alloy and measuring 3 1/2 in overall height. 3G Electric interprets your demand for this OEM-specified valve, sourcing it across 14 industrial departments with specialist depth in combustion, pumps and controls to ensure you get the right solution.
Frequently Asked Questions
What is a Watts pressure relief valve used for?
A Watts pressure relief valve protects hot water heating systems from overpressure. It automatically opens when system pressure exceeds its set point, discharging water to prevent equipment damage or failure. This ASME Section IV rated valve is commonly installed on boilers and storage tanks.
What are the specifications of the Watts 1/2 LF53L-150 pressure relief valve?
The Watts 1/2 LF53L-150 is a 1/2 in MNPT x 1/2 in FNPT pressure relief valve made of copper silicon alloy. It has an overall height of 3 1/2 in and is ASME Section IV rated for hot water applications. The valve body material resists corrosion in hydronic systems.
Where to buy a Watts pressure relief valve worldwide?
3G Electric supplies the Watts 1/2 LF53L-150 pressure relief valve to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial sourcing partner, we provide genuine Watts valves for hot water heating systems across all regions.
How to install a Watts pressure relief valve?
Install the Watts pressure relief valve in the hot water system's top tapping or on a separate tapping near the top of the tank. Ensure the discharge pipe is directed to a safe drain location and is not blocked. Use thread sealant on the MNPT connection and tighten to manufacturer torque specs.
Used in
Common applications for WattsWatts Products
3G Electric supplies Watts asme section iv hot water pressure relief valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
