I'm designing the pipe layout for an en-suite bathroom in my loft conversion and would like to ask if it's possible to have the air admittance valve at an angle of 45° (the reason being it will be easier to hide away if it runs parallel to the roof).
I seem to remember reading somewhere that they need to be vertical to operate correctly but I can't find the document where I read it !
Confirmation of 45° or 90° would be a help as the rest of the fittings I'll need to order depend on the valves orientation.
Many thanks in advance.
Antony
I seem to remember reading somewhere that they need to be vertical to operate correctly but I can't find the document where I read it !
Confirmation of 45° or 90° would be a help as the rest of the fittings I'll need to order depend on the valves orientation.
Many thanks in advance.
Antony