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Your cart is empty. The Watts Lead-Free Brass Calibrated Poppet Type Pressure Relief Valve is a poppet type valve specifically designed for use as protection from the buildup of excessive pressure in systems containing water, oil, or air. Crafted with meticulous attention to detail, this valve boasts a durable construction featuring a 3/4" NPT male inlet and 1/2" NPT female (drain) outlet, ensuring compatibility with a wide range of systems. Furthermore, its all-brass composition, coupled with a stainless steel spring, guarantees resilience and longevity even in the face of demanding operating conditions, and its lead-free construction guarantees compliance with industry standards. It also comes with a lead-free brass bonnet, a Buna-N disc on machined body seat, as well as an O-ring to ensure a secure, leak-proof seal.
Engineered for precision, this relief valve is conveniently equipped with a calibrated adjustment feature, offering flexibility based on your system's specific requirements by allowing you to finely tune the valve to the exact relief pressure required for optimal performance.
With a maximum pressure rating reaching up to 300 psi (20.67 bar), this valve has an adjustable range spanning from 50 to 175 psi (3.45 to 12.06 bar), this relief valve offers a wide spectrum of protection, adapting seamlessly to varying pressure requirements. Whether mitigating sudden spikes or maintaining steady pressure levels, this valve stands as a versatile solution for ensuring system integrity and safety.
VladMasters
Reviewed in Canada on March 7, 2025
Accurate enough and good quality
Arizzy
Reviewed in the United States on July 2, 2024
The valve was of good quality and the plumber commented on it. So far all good.
NAME_NOT_FOUND
Reviewed in the United States on May 3, 2024
The product packaging says “lead free” but in the fine print it also says that it contains enough lead to make it unsafe for human consumption.This is fraud.
NoWon
Reviewed in Canada on December 23, 2024
minor negitive issues no visual indicator if open or closed and you need a pair of plyers to turn and adjust the presssure setting.Also would have been better if the outlet was also 3/4" NPT male the same as the inlet.Minor thing you just have to add and adapter.Then you can just attach flexible hoses for easier replacement or repair.On a positive note the relief valve works great.Set at the lowest setting (50 psi) works great in my house's hot water recirculating system with pex plumbing.I would recommned it.
david bartlett
Reviewed in the United States on February 26, 2023
Pressure relief on hot water system. The last like this lasted over twenty years but is now leaking slightly. Good service life
Paintchk
Reviewed in the United States on October 1, 2022
Easy to install and setup
IAN MCDOUGALL
Reviewed in the United States on January 2, 2022
Ease-of-use
Jacob Moseley Sr.
Reviewed in the United States on September 21, 2020
Used this valve for my coolant bypass on my 05 Cummins. Works like a charm!
Red Hewitt
Reviewed in the United States on November 19, 2020
Used for a coolant bypass on my 04 cummins. Wish they were cheaper but works great. So far so good.
Bigjimbig
Reviewed in the United States on December 9, 2012
Used to replace a 75lb pressure relief valve installed by Ryland Homes, on a county water line, that a county employee told me gets up to 100 PSI. Every other time I ran the Rainbird system, the old valve on the main from the street would open and not shut. If I was away the water ran out into the street. You would think a neighbor might come over and shut it off, it is outside on the house, or ring the bell. I got a $580.00 water bill one month. Tampa, Hillsborough County, FL. Moreover, the old valve would not close again, until you shut the main off and turned it back on.This one I set at 105 PSI and it has not opened once. I think I might turn it lower, until it does open and see if it closes on its own, once excess pressure is released by it. I have not done that yet.
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