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Your cart is empty. LEGEND MODEL T-50 pressure relief valves are for protection against excessive pressure. Recommended for all water system installations to protect against damage to piping and pressure tanks. They are set at 75 P.S.I. and are adjustable to 150 P.S.I.
Adjustment procedure:
1. Remove knurled access cap (Part #1)
2. Mark the position of the screwdriver slot in the disc (Part #3), in
relation to the body (Part #8); Using a permanent marker, make a
reference mark on the top edge of the body, at either end of the slot.
3. With a large flat-blade screwdriver, turn the disc clockwise to
INCREASE the relief pressure. One complete 360° revolution equates
to a 25 p.s.i. increase: 75 p.s.i. factory setting plus three complete
revolutions from the reference mark attains the 150 p.s.i. setting. 100
p.s.i. factory setting plus two complete revolutions from the reference
mark attains the 150 p.s.i. setting.
4. Replace the knurled cap. Do not over-tighten.
1975re5
Reviewed in the United States on March 24, 2025
I ordered this pressure valve and then tried to cancel it but it couldn't be canceled. It arrived and is of excellent quality. We have water pressure spikes to 110/120 PSI that we haven't identified the cause. We have a Pressure Regulator (PRV) set at 51 PSI and an Expansion Tank on the Water Heater. Nevertheless, Water Pressure spikes. I bought an adapter to go from 1/2" male NPT to 3/4" female NPT. Screwed this on our Hose bib in the back of the House. This valve opens every so often and it likely saving our Plumbing and Appliances from high-pressure damage. We've spent $$$$ trying to get the issue identified and resolved. In the meantime, super glad we have this pressure relief valve. If we get the problem resolved, we will still install this pressure relief valve permanently. Good insurance.
Dissatisfied customer
Reviewed in the United States on February 23, 2024
This relief valve is for my tankless hot water heater. It was factory set for 75psi. My line is at 100-120psi. Fortunately, the adjustment was pretty easy. The trick was to loosen up the thin cap and then you can increase the psi with every turn of a flat head screwdriver. The best part is this can be done with both the female and male connections already in place. The water will be slowly dripping at first but just keep turning until the dripping stops. It’s very exciting when you get it right!!
Mona Barrera
Reviewed in the United States on November 17, 2024
Needed it for my water heater and worked and fit perfectly
Real P.
Reviewed in Canada on November 1, 2024
Good product
reid filipiak
Reviewed in the United States on October 17, 2024
Good fit and function
TO
Reviewed in the United States on November 2, 2022
Pressure regulator set for 60 psi and relief valve began leaking around week 3 or 4.I had to install a garden hose temporarily to carry away the water leaks until I can replace,
CW
Reviewed in Canada on August 24, 2020
Exactly as described works fine but somewhat overpriced.
Prince Charles
Reviewed in the United States on August 13, 2020
Just what I need to correct over pressure from water heater. The pre set 75 psi worked perfectly. Highly recommend for those cases where after showers the pressure builds up and you do not have an accumulator tank at the water heater.
Terry E-J
Reviewed in the United States on June 15, 2020
Installed this after my original valve let loose and left 2 inches of water in my basement. It went on very easily with some Teflon tape and a small pipe wrench. After it was installed I spun off the cover cap, adjusted the screw to 125 psi by counting the turns, and spun the cap back on (I also labeled 125 psi with a marker on the valve). It’s been on for about two months now and no signs of any leaking. Very happy with the quality.
Heather
Reviewed in the United States on May 16, 2017
This pressure relief valve worked great in our RV to keep the hot water tank expansion from raising the pressure to high. We observed greater than 100 psi at times. We have a pressure gauge inline with this valve and we successfully adjusted the relief pressure to prevent the system from exceeding 60 psi. I searched local hardware stores but couldn’t find anything that matched the compact size of this unit.
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