Brighton Reticulation

Why Does My Solenoid Stay Open?

If you have a solenoid that stays on with all of the other stations then 9 times out of 10 it is your diaphragm that is playing up. First check that you haven’t accidentally placed it in the ‘on’ position, then check that the small screw for flushing is done up tight. If these are all ok and there are no visible leaks then its usually the diaphragm.

This is the rubber piece in the middle of the solenoid and allows water to flow or blocks its flow. For some solenoids eg Richdel you can probably head down to your local retic shop, grab a new diaphragm and change it over. Other solenoids aren’t quite so easy and you may need to replace the whole unit.

If you are buying a solenoid then I recommend the jar top variety which you can screw on and off rather than the solenoids where stainless screws are used to join the two halves together. In my experience the solenoids that are screwed together are harder to separate and rejoin. Bits of dirt can get in between the surfaces, the gasket can break and it can just be  messier getting it all to line up again.




  1. chris
    October 29, 2011

    I have a station that comes on when any other station is on, or even if either of our neighbours retic is on! (We share a bore)
    Would this still be the diaphragm? I have bought a replacement solenoid but haven’t wired it up yet, and the problem is still there. I’ll wire it up today and see how we go.

    • brighton
      October 29, 2011

      Hi Chris

      Yep – I reckon that’s exactly the problem. I have a friend with the same issue at the moment so will be interested to see what develops there too

  2. chris
    October 30, 2011

    I’m giving in. What do you guys charge for a call out? Do you come to Duncraig?

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