Shower trap - part misssing?

Idioteque

We've been getting a smell from the shower trap for a while now and I'm only getting around to sorting now. It was installed before we moved in. It needs a bit of a clean but I've bleached it before and the smell still comes via the outlet so I know it's not just hair etc. around the trap causing it.

Does anyone know if there's a part missing from the trap as from the current set-up I don't see any seal to stop the smell, the detachable cup is full with water but the outlet pipe smell can just travel up outside of it between the lugs under the chrome top. Maybe this design of trap is not meant to fully block smells and it's expected you would install a trap inline further on?

Victor

It's a bottle trap. This shows ho

10-10-20

OP, I see your point about the lack of a air-tight seal. The "bottle" part appears to clip into the base, but are you sure that it's mating fully with the various lugs and clips?

I'd google that trap and try find out whether there is a replacement sealing/gasket kit for it, or perhaps a whole replacement head.

Idioteque

@Victor I understand how that type of trap works with the pipe submerged below the waterline. In this case the pipe goes into a container but I don't get how it's meant to stop the smell. There must be something missing that stops the gas from travelling outside of the container up through the top.

It's a JT product, here's a similar trap from their range albeit a much newer one.

@10-10-20 I can't see anything not connecting properly but there are clear gaps for air which can't be right. I've emailed the manf. also but thought in the meantime someone might be familiar with them and spot something obvious missing maybe.

cap.in.hand.

Could you not put air outlet inline on the water outlet pipe outside the house

Idioteque

https://www.boards.ie/discussion/comment/118356090#Comment_118356090

Would that not be more to create a siphon effect for flushing etc. by drawing air in as opposed to stopping gasses travelling up the trap?

cap.in.hand.

https://www.boards.ie/discussion/comment/118356685#Comment_118356685

If it piped into a open manhole cover directly outside house ...any gases/smells should be dispersed into the air from there you'd think...

Idioteque

Amazingly the manufacturer just came back to me on email and said I'm "missing the part that stops the smell coming back through" - they've offered to send the missing part out in the post FOC 😮

Great service from them!

standardg60

https://www.boards.ie/discussion/comment/118355758#Comment_118355758

From the diagram it would seem the flange at the in the shower tray unscrews which would allow you access to the body trap. There may be detritus in this which is causing the smell. Clearly the chrome fitting doesn't sit flush with the flange as the gap allows the water to escape.