plumbing

[indigo]

I recently tried to replace the diaphragm on a multi point gas water heater. I think it was a chaufetau( Spelling?) I could not get the diaphragm housing to seal. I made several attempts to no avail. I then put the housings together without the diaphragm and I could a gap of about 0.7mm.
Is this common for this heater? any suggestions on how I could have resolved the problem?

 

[kirkgas]

are you sure you have the right diaphragm, or is facing the right way round , any time i have ever changed a diaphragm it is an easy fit with no leaks, but i do remember some of the old vokera ones were slightly different and leaked if you got the wrong one

 

[Puddle]

The diaphragm fits into the housing rim,should be no problem,maybe you have wrong diaphragm or one made in china,never had a problem

 

[indigo]

The diaphragm fits into the housing rim,should be no problem,maybe you have wrong diaphragm or one made in china,never had a problem

The diaphragm was correct. In fact I bought two from a reputable source.Including a new housing rim. But neither worked. I was surprised, I have never had this problem with other boilers.