hi there.
i'm currently doing and apprenticeship in heating and vent and could do with a little help on a few things.
can anybody tell me how:
to do a soundness test on waste pipes
check for trap seal depth
do a siphonage test
and how to test a waterless trap to see if it's defective.
any help would be greatly appreciated.

i'm currently doing and apprenticeship in heating and vent and could do with a little help on a few things.
can anybody tell me how:
to do a soundness test on waste pipes
check for trap seal depth
do a siphonage test
and how to test a waterless trap to see if it's defective.
any help would be greatly appreciated.
