Ask The Trades - 40 0r 43mm?

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Ask The Trades › DIY Forum › Plumbing Questions › 40 0r 43mm?

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40 0r 43mm? (Read 4388 times)

runes

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40 0r 43mm?
Aug 10^th, 2010, 9:13pm

hi guys,
i'm refitting my bathroom out at the moment and have come to a slight hicup.
the existing basin waste pipe and connections states 1 1/2" / 40mm push fit. i've been to my local plumbers to pick up said 40mm only to come back home to find it is 43 and fits solvent weld connections. so thought some monkey there had got it wrong and dindnt kick up a fuss. went in today and asked for 40mm, clarified the 40mm and 1 1/2 inch measurements only to find when i got home its 43mm again! Angry

what the &%$@ is going on here? before i go back tommorrow morning and start ranting, can someone clear this up for me please? i have now wasted to evenings without a basin due to this and needless to say its frustrating

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thescruff Global Moderator Trade Member Author Offline Who said plumbing was easy. Posts: 6037 Total Thanks: 147 For This Post: 0 Gender: Trade: Plumber	Re: 40 0r 43mm? Reply #1 - Aug 10^th, 2010, 11:09pm First basin are nearly always 32mm. Secondly different makes have different sizes. Pushfit is always slightly smaller. Take a bit of pipe with you and make sure it's pushfit and not solvent weld you're buying.
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runes GDPR opt-out Total Thanks: 147 For This Post: 0	Re: 40 0r 43mm? Reply #2 - Aug 11^th, 2010, 12:52am yeah, drops 32 into 40 to marry into bath waste. taking a length of pipe with me and insert it into the guy behind the desk
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thescruff Global Moderator Trade Member Author Offline Who said plumbing was easy. Posts: 6037 Total Thanks: 147 For This Post: 0 Gender: Trade: Plumber	Re: 40 0r 43mm? Reply #3 - Aug 11^th, 2010, 1:53am Sounds like you may have a mixture of solvent weld and pushfit.
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londonman

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Re: 40 0r 43mm?
Reply #4 - Aug 11^th, 2010, 11:25am

No, it's not the guy behind the desks' fault. It's the industry and history. Waste pipes are the biggest pain in the arse known to man. Especially if, like you, you are trying to retrofit into an existing installation. As you've found out. They chop and change sizes - imperial went to metric but then as Scruff says it also depends if it is solvent or pushfit. So do what Scruff says. It's the only way.

Would all Third Party Apologists kindly mind their own business .....

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greg GDPR opt-out Total Thanks: 13 For This Post: 0	Re: 40 0r 43mm? Reply #5 - Aug 11^th, 2010, 6:02pm When in the merchants are you asking for 1 1/2 pushfit, if you dont specify they will generally just give you solvent weld. What colour is the exisiting waste pipe?
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CWatters Super Member Offline "Daddy fick it" says James Posts: 5150 Total Thanks: 58 For This Post: 0 Gender:	Re: 40 0r 43mm? Reply #6 - Aug 12^th, 2010, 9:43am thescruff wrote on Aug 10^th, 2010, 11:09pm: Take a bit of pipe with you... Gets my vote... and don't just compare that pipe with the new pipe. Test both in a socket to see if they fit the same.
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