air admittance valve stil smelling


Postby davsid » Mon May 30, 2011 2:47 pm

hi.i hope you can help.i have smells coming from two of three showers the water is pulled out of the traps.i have an internal air admittance valve fitted.it is higher then heighest overflow.
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Postby stokedan1 » Mon May 30, 2011 5:39 pm

is this a new installation or is it old and you have only just had the problem?

if old then it sounds like your durgo is stuck shut, probably need a new one
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Postby davsid » Tue May 31, 2011 10:05 am

hi thanks for reply.it is only 4 years old all pipework is new(plastic)
two of the showers discharge(one smells) into a hopper on the 4 inch soil pipe the other into the 4 inch soil pipe.They do not smell all the time but quite regularly.is there anyway of checking the durco thanks dave.
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Postby stokedan1 » Thu Jun 02, 2011 6:27 pm

if the durgo is i the loft try taking it off, make sure your traps have water in them, flush your toilet take a shower etc see if this solves the problem if so then buy a new durgo.

you say one smells which discharges into a hopper? what size waste pipe is on the shower and how long a run of waste pipe is there?

you may require an anti-syphon trap
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