Advise please, pressure switch

  1. Andzejus1981 Member

    Messages:
    27
    Location:
    UK, Scottish Borders
    How bad is and how to fix it?

    [​IMG]

    Few more:

    is metal filler will help? I have JB Weld Marine right now
    new pressure switch? only I can find is Burisch looks the same or you know better place to buy

    Thanks
     
  2. rtbcomp

    rtbcomp Moderator Staff Member

    Messages:
    18,373
    Location:
    Sheffield UK
    Mend it with a new one.

    It looks like a generic pressure switch, loads on Ebay, Amazon, Machine Mart &c.

    You'll just have to make sure the connection for the thin pipe from the non-return valve to the switch (the unloading pipe) is the same.
     
    Parm and johnik like this.
  3. Andzejus1981 Member

    Messages:
    27
    Location:
    UK, Scottish Borders
    Ordered new one
    https://www.machinemart.co.uk/p/pressure-switch-4-port-20-amp-1-phase/

    but I urgently need to use the compressor this weekend (couple hours I hope) for soda blasting so are metal filler will do the job until new switch arrives?
     
  4. rtbcomp

    rtbcomp Moderator Staff Member

    Messages:
    18,373
    Location:
    Sheffield UK
    Nothing to lose by trying it, don't overtighten the union though, especially if it has a tapered thread. A couple of wraps of PTFE tape may help.
     
    slim_boy_fat likes this.
  5. slim_boy_fat

    slim_boy_fat Forum Supporter

    Unless you ordered it for 'next day delivery' it may be that the metal filler won't be fully cured before you need to do the job. Still worth a try if you get it done tonight. :thumbup:
     
  6. Lots of Loctite Hydraulic Seal and just do it up by hand.
     
    frank horton and Morrisman like this.
  7. Pigeon_Droppings2 Member

    Messages:
    1,447
    Location:
    london
    Make up a steel clamp to brace the outside....like a c clamp that you find on brake hoses....then a load of tape on the threads.

    Use a nice thick piece of steel for the clamp....you could shape the casing a little to give it a nice snug fit. Could even use those bolt holes to clamp it on with a couple of tabs....post some pics....I really enjoy quick engineering fixes :clapping:
     
    Morrisman likes this.
  8. roofman

    roofman Purveyor of fine English buckets and mops

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  9. frank horton

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

    Messages:
    1,162
    Location:
    manchester, UK
    or just use some quality silicone RTV sealant.......clean with brake or carb cleaner screw in by hand and cure overnight.....
    given up on JB weld forever......does the marine stuff float....hahaha......
     
  10. armalites Member

    Messages:
    3,506
    Herefordshire
    Even if it leaks it may still be enough to get you running. Most likely that has been caused by taper fitting being tightened too much I would guess.
     
  11. Andzejus1981 Member

    Messages:
    27
    Location:
    UK, Scottish Borders
    Little update:
    Metal filling doesn't help at all.
    Received today new pressure switch, thread for pipe is to big :(

    [​IMG]

    Maybe it's no point to return maybe there are some adaptor?
     
  12. rtbcomp

    rtbcomp Moderator Staff Member

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    18,373
    Location:
    Sheffield UK
  13. Andzejus1981 Member

    Messages:
    27
    Location:
    UK, Scottish Borders
    Others are the same, only different is for pipe, Clarke (new) 16mm, mine Wolf is 13mm
     
  14. rtbcomp

    rtbcomp Moderator Staff Member

    Messages:
    18,373
    Location:
    Sheffield UK
  15. carbon

    carbon Member

    Messages:
    990
    Location:
    S. Glos. U.K
    From those approx sizes I would have thought you would need a 3/8" to 1/4" BSP reducing bush
     
    merckx and rtbcomp like this.
  16. Andzejus1981 Member

    Messages:
    27
    Location:
    UK, Scottish Borders
    Thank you for your help guys
     
  17. Andzejus1981 Member

    Messages:
    27
    Location:
    UK, Scottish Borders
    Just a question about PTFE liquid cure time: how long to wait?
     
  18. 123hotchef Member

    Messages:
    6,416
    Location:
    Kent
    Depends on brand it will say on bottle. Mine is 24hours for.full cure
     
  19. MCKDAVID Member

    some might be quicker, but the ones I've had have all been the same, 24hours before full pressure.
     
    123hotchef likes this.
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