Jump to content

Compressor question


Recommended Posts

My compressor has sprung a leak, its an italian made 'Wolf air' and its leaking are from the little box that has the pressure gauges/safety cut out switch on it on ? it was working fine then started to whistle a bit and now al of the air simply appears to be leaking away ……any suggestion for what it might be and if its worth fixing ?

 

ATB Graham

Link to post
Share on other sites

This is probably your pressostat.

It has a vent to atmosphere to depressurize the cylinder discharge line by means of a non return valve, and this non return valve may be dirty.

The discharge depressurization enables easy start.

Waldi

Link to post
Share on other sites

Inside that little box you will find a rubber diaphragm that has split or perished ,it controls the max pressure and cuts the motor. they are available on the net but if you want to have a go at it just make a new one out of an old inner tube, worth fixing.

 

Graham

Edited by Graham Harris
Link to post
Share on other sites

Inside that little box you will find a rubber diaphragm that has split or perished ,it controls the max pressure and cuts the motor. they are available on the net but if you want to have a go at it just make a new one out of an old inner tube, worth fixing.

 

Graham

Graham, many thanks, you were spot on its one of these central-pneumatic-model-388897-regulator-diaphgram-21819770.jpg but by the look of it made of compound of unobtainium and rocking horse p** plated with hens teeth so have ordered a bit of rubber sheet to see if I can cut a new one

 

ATB Graham

Edited by Graham
Link to post
Share on other sites

My Clarke Industrial compressor was losing all it's stored air when switched off, from within the auto switch box, so I ordered and fitted a new one. Still leaked all air to zero! Problem was not in the box but a worn seal in the non-return valve in the compressor to tank feed pipe. Dohhh!

Link to post
Share on other sites

Yes, that non return valve can cause problems.

I recently repaired one for a friend - the rubber seal (looks like a cylinder) had worn a circular groove where it contacted the metal pipe end.

Cure was (& I did not expect this to work) to pop it in the lathe, & turn off a mm or so to get back to a flat surface. it worked a treat !

 

Bob.

Link to post
Share on other sites

Common fault then Bob.

 

Flatted mine off on a sheet of emery paper.

 

ps like your new signature pictures! :) ( but now they've disappeared! )

Edited by Les
Link to post
Share on other sites

Yes, that non return valve can cause problems.

I recently repaired one for a friend - the rubber seal (looks like a cylinder) had worn a circular groove where it contacted the metal pipe end.

Cure was (& I did not expect this to work) to pop it in the lathe, & turn off a mm or so to get back to a flat surface. it worked a treat !

 

Bob.

+1 Have this issue on my compressor and have repaired using a flat tap washer. You can buy just the pellet to go in some of the more common valves.

Here is a range of compressor check valves from a supplier I would not use, but is an useful catalogue of what is on offer.

https://www.amazon.co.uk/compressor-check-valve/s?ie=UTF8&page=1&rh=i%3Aaps%2Ck%3Acompressor%20check%20valve

Find the type you have, then search for it from a supplier that hopefully pays UK tax.

Peter W

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.