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Model #1/2 LF530C

Store SKU #1000321736

1/2 in. Lead Free Brass Pressure Relief Valve

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  • Provides an adjustable pressure relief range of 50 - 175 PSI
  • Prevents pressure build-up in systems with water, oil or air
  • Perfect for contractors and homeowners
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Product Details

This 1/2 in. lead free calibrated pressure relief valve has an adjustable pressure relief range of 50 to 175 psi. It is designed for use as protection against excessive pressure build-up in systems containing water, oil, and air. It is an excellent choice for both contractors and homeowners.
  • Lead free brass body construction
  • All stainless steel spring
  • Adjustable pressure range 50 to 175 psi
  • Maximum temperature 180°F
  • Return Policy
  • California residents

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

8Questions
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Q:How do I determine whether I have a faulty valve or not without have plumber come out test my wat...
by|Dec 13, 2019
1 Answer
Answer This Question

A:  Hello, I would recommend having a professional check to be safe. Best, Watts team

by|Oct 19, 2022
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    Q:Does it affect the working of the valve if I reduce my line from 3/4 inch to 1/2 inch to work wit...
    by|Sep 10, 2019
    3 Answers
    Answer This Question

    A:  Hi Sam, This will not affect the valve - a 1/2 in. line will work with this 1/2 in. valve. Best, Watts team

    by|Sep 25, 2019

      A:  I suspected it might alter the pressure function. Thanks!

      by|Sep 11, 2019

        A:  Yes it will. The pressure changes when you reduce the pipe size. It is advised to use 1/2” with a 1/2” line and 3/4” with 3/4” line

        by|Sep 11, 2019
          1 found this answer helpful
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          Q:how do I properly set the press ?
          by|Nov 1, 2018
          1 Answer
          Answer This Question

          A:  You turn the dial adjustment marked with black line and LBS pressure setting either clockwise for higher or counterclockwise for lower pressure to the pressure setting you want the valve set at.

          by|Jul 19, 2020
            1 found this answer helpful
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            Q:How do you set this to 100 PSi? There were no instructions in the box. I see a screw inside that ...
            by|Oct 4, 2017
            1 Answer
            Answer This Question

            A:  Push down and turn. It will allow it to pop up so you can see the numbers.

            by|Oct 4, 2017
              Showing 1-4 of 8
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              Customer Reviews

              4.5 out of 5
              (34)
              • 4.5
                out of 34 reviews
              • 77%recommend this product
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              Showing 1-10 of 34 reviews
              worst expansion valve
              I had my original valve (non adjustable) for 12 years and start leaking. I replaced with this valve by a professional that last 3 months before start leaking. I bought two from Home Depot and that too start leaking after about 2 months each. What a piece of junk.
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                Rating provided by a verified purchaser...
                Rating provided by a verified purchaser
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                Perfect fit. Easily adjustable only the reverse of what...
                Perfect fit. Easily adjustable only the reverse of what I am used to.
                by
                • Verified Purchase
                Much needed for my tankless water heater...
                Much needed for my tankless water heater
                by
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                Rating provided by a verified purchaser...
                Rating provided by a verified purchaser
                by
                Response from WattsWaterMar 26, 2021
                Hello,

                Thank you for your positive review! We are happy to hear that this product met your expectations. Please feel free to reach out if you have any questions, our team will be happy to help! Watts
                • Verified Purchase
                The valve was a exact replacement for the old temperature...
                The valve was a exact replacement for the old temperature relief valve and was easy to adjust to the to turn to the 150 psi setting which equals a temperature of 212 degrees.
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                Rating provided by a verified purchaser
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                1 found this review helpful
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                Showing 1-10 of 34 reviews

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                Ratings
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                ConnectionFIPMale Pipe ThreadSweat
                Inlet Diameter (In.)3/41/23/4
                Maximum Pressure (psi)150300 PSI400
                ApplicationNon-Potable Water,Potable WaterAir,Oil,Potable WaterPotable Water
                Outlet Diameter (In.)3/41/21/2
                Maximum Working Temperature (F)125180210
                Compatible Pipe MaterialMulti-PurposeBrassCopper
                MaterialBrassBrassBrass
                THD SO SKU1000092313
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