plastic push fit fittings versus compression fittings

wallbash

Well I have joined with you by hitting the SPAM button , but must admit it was ( and is still) a good thread.
I am still undecided, apart from never using end feed.

s1lv3rdal5

:mad::mad::mad:I have just had a plastic pushfit go on me after 3 years, it was not in a very good place to get to and flooded out the bathroom & downstairs.
Everything was new 3 years ago: bathroom, en-suite and downstairs wc.
Complained to the diy store where they came from, I doubt I will get anywhere after this time, even though it says "lifetime" guarantee.
Expensive plumbers job...
I just hope the other pushfit joints are going to be OK as they cannot be replaced easily. :mad::mad::mad::mad:

Will keep you posted

CashisKing

There is a time and place for all these fittings, but if the joint is likely to be inaccessable (e.g under floors etc) or on places where it might get knocked etc then choose end feed especially if doing DIY.

Noise_Expert

I live on a boat and had a wake up call earlier this year!

One of the other boat owners in my marina had used push fit fittings extensively on his boat. He went away on holiday and whilst away one of the fittings failed. Unfortunately, the mains supply was still connected so water continued to flow.

When the tide came in, the boat had enough water in it that it didn't float. Consequently the boat was inundated and sunk!

Obviously there is a time and place for push-fit fittings, but I wouldnt recommend them in 'risky' areas or in areas where they are hard to reach. I've always used solder fittings and compression fittings in low risk areas.

ormus

maybe he should have turned off the mains supply when he went on holiday.

orbits

I fitted my kitchen with the original (non screw) push fit fittings in 1991. I had a few older compression fittings that were used as well.

Last night temperatures dropped to -12.2C and I had no water (hot or cold) to the kitchen sink where the pipes run in parallel along the inside of an outside wall.

Where the pipes were T'd to the sink taps the cold supply used a brass compression T and the hot a plasic push-fit. The push fit has completely split due to the expansion of the ice whilst the compression T has survived (although is iced up at the same point.

Therefore I would advise not using them (push fit) if there is any chance the joint may freeze.

southcoastrgi

orbits wrote: »

I fitted my kitchen with the original (non screw) push fit fittings in 1991. I had a few older compression fittings that were used as well.

Last night temperatures dropped to -12.2C and I had no water (hot or cold) to the kitchen sink where the pipes run in parallel along the inside of an outside wall.

Where the pipes were T'd to the sink taps the cold supply used a brass compression T and the hot a plasic push-fit. The push fit has completely split due to the expansion of the ice whilst the compression T has survived (although is iced up at the same point.

Therefore I would advise not using them (push fit) if there is any chance the joint may freeze.

you would have had a prob anyway if the water had frozen as ice expands more than water so had you not had the plastic fitting then it is likely the copper pipe would have split, i have been out to a garage twice this week where a compression fitting had "blown" off due to no heating & the water in the pipe freezing, speedfit every time for me (not polyplumb thats !!!!!)