I am getting some backflow from my sink to my shower, can anyone suggest a type of non return valve that would be suitable. As there is no pressure then a spring loaded type wouldn't work, I was thinking a swing check valve may do the job. All the connections are 25mm flex tube. Has anyone fitted one or solved the problem ?
No. I fitted one under the shower floor with the intention of fitting a grey water tank ... did not get that far. The Hepvo valve is close enough to horizontal mounted close to the shower floor and then a fairly shallow fall to the outlet. Works perfectly and sink or vanity water has never come in.
