Wilkins 375 dumping relief repair

A quick fix of a common issue that causes the relief to be in full dump. The diaphragm of the relief gets cracks and becomes hard so it doesn't allow it to close.
Rebuild kit: www.backflowpartsusa.com/shop...

[@SimplyMirella_]

Thank for video!

[@seecesar]

Great video! I am having this prob... don't have the parts but I now know what might be wrong. Thank you!

[@dave_adamson]

Thank you!

[@kenhendrix6741]

Thanks for posting this! This is just the info I needed.

[@D.D.T.123]

I have only ever serviced the checks so far on a 375. Can the RV be serviced without removing the vessel? The check seats on the .75” devices seem a bit fragile. Thanks for the video.

[@dave_adamson]

You can remove the rv without taking the vessel out but it just makes it a lot easier to work on. Agreed when working on the checks I keep spares on the truck just in case I break one.

[@venkatsamba8677]

I have same problem with my preventer. Could you let me know the name of the parts you replaced and where can I find? Mine is 3/4” 375 RP

[@dave_adamson]

Your best bet is to get a full rebuild kit. It will have all the parts you'd need. Backflowpartsusa usually has good pricing

[@umanubrand1527]

how to remove the checks on this type? I had a busted elbow at my outflow from the check that I am repairing now but noticed water discharging out the small hole of the outflow

[@dave_adamson]

When you remove the vessel. They will slide out the larger (inlet) end. Can be tough. Remove the o-ring and use a small screwdriver to work it out. Hope this helps

[@umanubrand1527]

@@dave_adamson thanks, I am still getting small leak from the discharge disk area. Must be the seals your replaced in your video. Where did you purchase yours?

[@dave_adamson]

@@umanubrand1527 I get mine from a local supplier. But have order from backflowpartsusa every so often