Commercial waste pipe.

[chris watkins]

Ah, yes... The old, "push it downstream and make it someone else's problem" approach...

If it is traced back to them they will be in trouble, it is take much more seriously now days.
Costing us a fortune to remove it, and them bl::::dy are wipes, if you want to wash it buy a Bidet.

 

[king of pipes]

My concern is one wash basin is on a branch of about 15-20m, from what I’ve read this is way too long?

Was advising on this post bud , a commercial kitchen should always have some sort of grease trap although plenty who don't especially in seaside town such as ours. kop

 

[SJB060685]

Thanks @chris watkins and @king of pipes. I appreciate your input, basically I just wanted to absorb your expertise and report back to him. To clarify further the wastes do not run into a stack with an external high level vent, or air admittance valve installed above highest flood point. It is simply many metres of 40mm before going through external wall and down into a gully, the only air admittance if you will is one tee with an upright piece of overflow pipe with a tube from a machine going into it. I’m right in thinking this not a vented system?

 

[chris watkins]

Yes it is a trap not an open vent.
Open vent pipe suitable terminated on the end of the run (last fitting connected) will stop it self siphoning all the traps connected. Albeit that gully on the end is trapped so no drain smells there will still be a stink from the pipework & if fitted it will not matter if it runs full bore. (might even need another half way)

 

[SJB060685]

Ok. That overflow did not have a trap on it though, it was simply an open ended pipe which could easily emit drain smells into the room.
So now you can picture the layout a bit better and know that the 40mm pipes do not enter any 100mm stack anywhere (just through wall and into gully) what should I suggest he has done? I’m not interested in this type of work personally so will strongly urge him to get a reputable plumber in who knows what he’s doing but I at least want to give him all the info he needs.
Thanks for your time Chris by the way

 

[SJB060685]

Thanks Chris. I’ll report back to him. Sorry if my questions sounded stupid, I did do my NVQ 1-2 at college, so know a little, however my Monday to Friday was spent on my knees servicing and repairing oil fired appliances, that’s all we did lol.
Thanks again buddy!

 

[king of pipes]

A Reputable plumber will guide them through the best solution

 

[SJB060685]

Yes that’s what I’ll suggest. My concern is if he does do anything to it, he might just get the same person/firm back who installed it all in the first place, when clearly it’s not up to scratch. Either way I’ll advise him on what you guys have said and leave it with him, it’s on his head then if anything goes wrong.