Need to source a good quality pressure switch

  1. Mattycoops43 Member

    Messages:
    108
    Location:
    Newport, South Wales
    Hi All

    As the title really. The 200lt compressor I rebuilt a while ago-I stupidly went against advice and put a cheapo pressure switch from fleecebay on it, and it has already failed. It was working, till I slightly upped the working pressure, and the de pressuring valve popped and now leaks all the time.

    All I can find seem to be the same rubbish from China. Can someone point me to a brand name, or somewhere where I can buy a proper one?

    Thank you

    Matt
     
  2. brokenbiker

    brokenbiker Member

    Messages:
    10,437
    Location:
    Llanbobyll, south wales
    noticed you are in newport, there is a place in cwmbran that may be able to help.

    compressor systems, 38 court road industrial estate, cwmbran, np44 3as...might be a good start and if they cant give you what you need they can probably point you in a better direction
     
  3. brokenbiker

    brokenbiker Member

    Messages:
    10,437
    Location:
    Llanbobyll, south wales
    not sure if they are open to public but they are bound to have a contact point you could try
     
  4. Mattycoops43 Member

    Messages:
    108
    Location:
    Newport, South Wales
    Thanks. I'll look them up.

    Matt
     
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  5. brokenbiker

    brokenbiker Member

    Messages:
    10,437
    Location:
    Llanbobyll, south wales
    what pressure are you looking for? my father has got 2 dead comps in his garden but unsure as to what pressure they top out at..
     
  6. brightspark

    brightspark Member

    Messages:
    26,339
    Location:
    yarm
    if you want a decent one buy a Danfoss . have one on mine for 40 years. I borrowed :whistle:
     
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  7. Mattycoops43 Member

    Messages:
    108
    Location:
    Newport, South Wales
    Not high, it's an old compressor. I was running 95psi before, but when I decided to push it to 100 the switch stopped working and started leaking.
     
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  8. brokenbiker

    brokenbiker Member

    Messages:
    10,437
    Location:
    Llanbobyll, south wales
    i will try and remember to check whats on the 2 we have when im over there tomorrow...115psi rings a bell on the 50L one
     
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  9. Mattycoops43 Member

    Messages:
    108
    Location:
    Newport, South Wales
    Sounds great, They should be adjustable anyway?
     
  10. brokenbiker

    brokenbiker Member

    Messages:
    10,437
    Location:
    Llanbobyll, south wales
    yes i would think so
     
  11. frank horton

    frank horton V twins are great but 4"s rule.........

    Messages:
    1,316
    Location:
    Soon 2 B Crete
    have used a lot of that ebay Jabberwocky and they do surprisingly well..
    never bother adjusting them, I buy the correct press 125, 150, 175psi.....
     
  12. MoreWellie Member

    Messages:
    983
    Location:
    Bedfordshire, UK
  13. brokenbiker

    brokenbiker Member

    Messages:
    10,437
    Location:
    Llanbobyll, south wales
    i hada quick look at the comps in my old mas garden earlier but it would seem everything on them is seized up from being left outside
     
  14. brightspark

    brightspark Member

    Messages:
    26,339
    Location:
    yarm
    cheapo ones can sometimes be ok I have one on one of my comps but instead of using the contacts to stop and start the motor mine just operates a separate contactor and just the coil
     
  15. johnser

    johnser Member

    Messages:
    1,741
    Location:
    North Cornwall
    Just a thought maybe worth checking, it's not the non return valve that's disintegrated? Sounds like similar symptoms.
     
  16. Mattycoops43 Member

    Messages:
    108
    Location:
    Newport, South Wales
    No worries thanks for looking.
     
  17. Mattycoops43 Member

    Messages:
    108
    Location:
    Newport, South Wales
    Thanks, I'm trying to work out in my head if that idea works, it might. Actually, it drains till empty through the switch valve, so it must be? or it would only drain the feed pipe. It is brand new, and has only been used a couple of times, could it have just stuck?

    I will go and have another look at it.

    Matt
     
  18. Mattycoops43 Member

    Messages:
    108
    Location:
    Newport, South Wales
    Been far too busy lately. I got to actually have a look at the compressor a couple of days ago, and it is the brand new NRV that is leaking. No idea why I thought switch, brain fade and the air is exiting via the switch.

    Anyway, no dirt in it, the rubber is good so I think weak spring. Can I add a second spring or something to make it work?

    Matt
     
  19. johnser

    johnser Member

    Messages:
    1,741
    Location:
    North Cornwall
    The majority of the sealing force should come from the tank pressure, the spring is just there to locate it really.

    Maybe it's locating badly? Or the seat for the seal us damaged?
     
  20. Mattycoops43 Member

    Messages:
    108
    Location:
    Newport, South Wales
    No ,the seal is perfect, no damage. I think the spring is just not strong enough.
     
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