I'm trying to replace the waste in my downstairs WC. The existing waste is 11/2 inches as is the pipework below. I'm struggling to find a 1 1/2 inch basin trap though. I'm guessing I can't substitute a 1 1/4 inch version as the gaps will be too large between the basin and the traps? Any ideas please? The basin, etc. was bought from bathstore before we owned the house. Many thanks!
Basin waste - 1 1/4 or 1/ 12?
- Thread starter LB85
- Start date
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Post a photo.
Inch and a quarter thread measures inch and half. It’ll be inch and a quarter.
1 1/4" is no good for a 1 1/2" trap as the builders of our college found out when we moved in.
They fitted the smaller size to all the outlets, (over 75 outlets), and tried to seal them with excess silicone. They should have tested them afterwards because we discovered as soon as we started using them we had leaks everywhere. They had to come back at their expense and replace every single one of them plus pay for the damage the water had caused to the cupboards the sinks are fitted over.
Screwfix sell them.
www.screwfix.com
Hope this helps.
They fitted the smaller size to all the outlets, (over 75 outlets), and tried to seal them with excess silicone. They should have tested them afterwards because we discovered as soon as we started using them we had leaks everywhere. They had to come back at their expense and replace every single one of them plus pay for the damage the water had caused to the cupboards the sinks are fitted over.
Screwfix sell them.
McAlpine Slotted/Unslotted Centre-Pin Basin Waste - Screwfix
Order online at Screwfix.com. Chrome-plated brass body. Centre-pin dry-fixing connection for a quick and simple installation. Suitable for basins with or without overflow. Supplied with clicker waste, washers and plastic spacer for use with unslotted basins. FREE next day delivery available...
Hope this helps.
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Pity you didn’t study Plumbing conny,,!1 1/4" is no good for a 1 1/2" trap as the builders of our college found out when we moved in.
They fitted the smaller size to all the outlets, (over 75 outlets), and tried to seal them with excess silicone. They should have tested them afterwards because we discovered as soon as we started using them we had leaks everywhere. They had to come back at their expense and replace every single one of them plus pay for the damage the water had caused to the cupboards the sinks are fitted over.
Screwfix sell them.
McAlpine Slotted/Unslotted Centre-Pin Basin Waste - Screwfix
Order online at Screwfix.com. Chrome-plated brass body. Centre-pin dry-fixing connection for a quick and simple installation. Suitable for basins with or without overflow. Supplied with clicker waste, washers and plastic spacer for use with unslotted basins. FREE next day delivery available...
Hope this helps.
There are adapters to do practically everything.
Builders likewise. Too many people think it’s easy. Until things go pear shaped.
Electrical biased trade Jeff.
The crazy thing is the builders fitted the sinks then fitted the wrong size outlets. There should not be any need to fit adaptors in that scenario. At a cost of £34m for the building you expect things to be correct when fitted.
We discovered an SVP, that carries rain water from the roof and waste waste water from the science labs, was leaking somewhere between the top floor and ground floor. After 4-5 visits from the plumbers, who checked and replaced each inspection cover in the SVP, it was 'accidently' discovered that one of the sections had been 'dry assembled' and not plastic welded. That incident involved large repairs to 2 suspended ceilings and 4 large light fittings plus replacement of the vinyl flooring on the ground floor and about 40 carpet tiles in two classrooms.
Properly designed plumbing waste systems should always be one size larger than the source outlet. It minimises siphonage of the traps! A proper plumber knows this and uses an internal reducer for such applications.
Much as someone with an electrical bias will not undersize a cable.
Who did you ask xx
Fairkerf Matelot! XWho did you ask xx
Dont ever change mate love you xx
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