New fittings onto old pipe

[HawkWhiteFinger]

Today I've put some new 22mm ballofix valves onto some old pipework.

They tighten up to what would usually be enough, but if I get a spanner on the fitting, I can still rotate the fitting on the old pipe. I'm aware old pipe appears a touch smaller.

I've dressed the olives in V2 paste, but yet can't test for leaks as the water won't be on for a while.

Is this something others have come across?

 

[Subby]

The pipe is old three quater inch pipe, slightly smaller than 22mm

 

[Belly]

You can get imperial rings to convert to old sizes

 

[HawkWhiteFinger]

Hmmm, interesting, guys.

I've added comp couplings to old pipe before and don't seem to remember any issues.

In the meanwhile, I'll get me some imperial olives in that case.

 

[Subby]

You could try tightening the olive onto the pipe , then removing the nut wrap the olive with ptfe then do up the fitting. Also the plumbers merchants will sell 3/4" olives

 

[HawkWhiteFinger]

You could try tightening the olive onto the pipe , then removing the nut wrap the olive with ptfe then do up the fitting. Also the plumbers merchants will sell 3/4" olives

I've just rang a merchant (who closes about now) and he's talking to me about leadlock, says he doesn't have 3/4 olives. I've dressed the olives in V2, ptfe paste.

 

[Subby]

Use the PTFE to beef up the olive then put the paste on top. then re-assemble for a tight fit.

You're lucky having a merchant that's open on Sunday! All ours close 11-12 on Saturday.

 

[stani]

Use the PTFE to beef up the olive then put the paste on top. then re-assemble for a tight fit.

You're lucky having a merchant that's open on Sunday! All ours close 11-12 on Saturday.

Not that lucky if the merchant doesn't know what 3/4 olives are!

 

[HawkWhiteFinger]

Use the PTFE to beef up the olive then put the paste on top. then re-assemble for a tight fit.

You're lucky having a merchant that's open on Sunday! All ours close 11-12 on Saturday.

Yeah in the past the ptfe paste has worked a treat and probably will this time too, but just hadn't noticed that with use of a tool (so not easily), the fitting could still rotate on the old pipe.

 

[kimbo]

Safer to get the proper fittings, if it goes wrong you will be to blame for not using the correct olives, I always carry a few on the van they are easily obtainable from most good merchants gut if not try bes.