in 228329 20090921 175057 wrote:
My bog cistern needs a new rubber valve but I cannot find one.

The torbek valve rubber available is flat and has a spiky plastic
centre. The one I want has a stepped conical shape and a much larger
bit of plastic in the centre needing a much larger hole and no spiky
bit.

Are there different insides for these valves? I thought torbek was
one standard valve pattern.

I've used Torbeck valves for 30+ years and I've seen at least 3 different designs.