Push fit plastic compression fittings on copper piping

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1 Sep 2006
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Suffolk
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United Kingdom
I want to replace the push-fit plastic fittings with brass compression fittings as one has sprung a leak and flooded the loft. Removing the fitting where the leak is was easy - it almost fell off. I cannot remove the other end or another fitting that I want to change. I don't want to use force. Can somebody please tell me the "easy" way and if I need a special tool? Thanks. Roger
 
What type of plastic fitting, hep20/marley etc....?

There are removal tools for some and some of the plastic fittings will unscrew.

Al
 
I don't know the type of fitting. There are no screw threaded parts at all. The pipe simply pushes into the connector. Somebody told me they are a permanent fitting and cannot be dismantled once fitted. They reckon I will have to cut the fittings off and replace with new. I have new brass prestex type fittings so I can do this if I have to.
 
They all come off one way or the other.

Best to just snip it off and replace with a length of pipe, and don't forget the inserts.
 
if they are grey and very slimline they may be the new hepworth ones which when fitted cant be removed without being cut off.
 
Was the one that fell off connected to a chrome pipe by any chance?
I'm speaking specifically about Hep2O here but would apply this globally in the absence of contrary information; when I say that, fittings with grab rings and chrome pipe don't mix. The grab rings cant get a bite on the chrome and are prone to slipping off.
Whats more likely is that the fitting was never pushed on properly in the first place.
New Hep demountable fittings grab first then seal with the O ring. The earlier ones and the non demountable type which I suspect you have there sealed first then grabbed on to the pipe.

In the first instance replace the fitting with a compression joint.

In the second instance support the pipe and push the fitting firmly into place. Pull the fitting and pipe apart to test that it wont come off again

Special tools = pipe cutter [ kopex/ monument pipeslice], for cutting pipe and junior hacksaw for cutting off the old fitting
 

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