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Diaphragm Failure #6 - What Has Caused This Issue??
As far as diaphragm failures are concerned, there are a number of failure types. Different types of failures are caused by different problems.
Regarding the diaphragm rupture in the photo below, what has caused this problem?
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Answer: Over pressurization
Diaphragm will have a bloated appearance towards the liquid chambers. The bloating is caused by uneven pressure on the diaphragm - in this failure mode the air pressure is greatly exceeding the required discharge pressure. A common cause of this is the opening up of a ball valve allowing the pump to run wide open before being fully primed. Remember that pressurizing the system in order to check for functionality or fully opening up the air pressure, before it is primed, are not recommended procedures.
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