where to fit saniflo discharge pipe

[gravytrain]

hello,
i've been asked to fit a wc in a small industrail unit which will need a saniflo. all the sevices are under the concrete floor including the soil pipe. my only choice for fitting the saniflo waste pipe is the pan connector of another wc in an adjacent room or the 50mm waste from two urinals, again in an adjacent room.

which would be most suitable/practical to do

many thanks in advance for any help.

rob

 

[WHPES]

Avoid anywhere round the pan connector (against regs - you may get waste flowing the wrong way into the WC bowl if you do - seen that and it's nasty!)

Can you tee into the waste pipe below the urinals?

 

[gravytrain]

yes i could access the urinal waste quite easily.
there is a vertical 50mm pipe coming out of the floor presumably this connects to the soil pipe
below the floor. the 40mm urinal waste connects to this 50mm vertical pipe. the vertical pipe has a rodding end on it which i could remove and
fit a reducer to 32mm for the saniflo.

saniflo said going into the pan connector was the prefferred option but now you've mentioned waste flowing wrong way into the bowl i've
gone right off that idea !!

thanks for your help

 

[Muncher]

Be careful when putting a pumped discharge into pipe work that has any kind of gravity feed, nothing worst first thing in the morning than the customer cleaning their teeth and the plug is blown out by pressurised Poo ........................

Saying that it wouldn't be the first time it has been done by fitting a Mc alpine T28 non return valve to prevent back flow to the urinal and an air admittance valve at the highest piont to prevent syphonage.

The macerator instructions will say it has to have a dedicated pipe to soil or waste.