OK to run/discharge old WC cistern overflow into sink waste pipe?

[dilalio]

http://www.plumbcenter.co.uk/produc...ct-syphon-8/?gclid=CPjruOvurc8CFSUW0wodzeYH8g

Jeez that was ****ing me off!

 

[Steelmasons]

To comply with water regulations any overflow should run through a tun dish in an accessible location AND the discharge point should be protected from foul smells in the drainage system by a water trap or a fanny flap.

Tony

Only the case when overflow pipe/s are discharged straight to drain.
Why are you giving advise on plumbing related matters?

 

[dilalio]

Ever wondered?

https://en.m.wikipedia.org/wiki/Tundish

 

[chaletstyle]

Ok, it's a low level cistern not a close coupled! Should be fairly straight forward to replace the flush with an internal overflow one.
Obviously you can't discharge the overflow into the basin cos it's higher!
This is another option...

Grrrr: can't paste link!

So it's not necessary to take cistern off the wall to fit new flush?