Diaphragm Failure.
Diaphragm Failure.
(OP)
Hello everyone,
I wonder what can cause the repetitive diaphragm failure within the corrosion inhibitor injection pumps?.
I couldnt find the troubleshooting within the manual and I believe it is intended to meet our process.
Your help will be appreciated guys.
I wonder what can cause the repetitive diaphragm failure within the corrosion inhibitor injection pumps?.
I couldnt find the troubleshooting within the manual and I believe it is intended to meet our process.
Your help will be appreciated guys.





RE: Diaphragm Failure.
RE: Diaphragm Failure.
Thank you for your cooperation.
PLease find the attached docs the technical data the drawing of the pump head + photos.
Many thanks.
RE: Diaphragm Failure.
Regards.
RE: Diaphragm Failure.
Thank you.
RE: Diaphragm Failure.
RE: Diaphragm Failure.
Also looking at the data sheet, the max.pressure is 2 x the min.pressure. The internal relief valve would have been set at the high pressure. When the pump is working at low pressure, the diaphragm would be pressed to the end until it is stopped by the discharge head.
RE: Diaphragm Failure.
RE: Diaphragm Failure.
Thanks for your reply.
I would tell you that the failure occur aprox each 6 months for each pump.
I will check the adjustement of the valves within the hydraulich chamber.
What would you think Gents if I will check the torque value(should be 220N.m) for the cover (item 2) bolts as it looks to
me that the diaphragm degree of freedom is limited the tightening value? please correct me if I'm wrong.
I wonder what is the role of the COTTER PIN (item 47) within the system.
Also,How could the stroke adjustement affect the diaphragm?.
Please see the attached document the parts list that may be helpful.
Your help will be appreciated.
RE: Diaphragm Failure.
RE: Diaphragm Failure.
RE: Diaphragm Failure.
It's okay if something elese were damaged after identifying the cause.
The most common probleme we're facing on this type of pumps is the diaphragm being perforated after 6months aprox and
sometimes less, at the start up of the pump..etc
In the past we had another type of pumps with a stainless steel diaphragm and this problem never occured.
Thanks.
RE: Diaphragm Failure.
The metal diaphragm pump had for sure a much smaller stroke volume. That is a different design. But when you used a metal diaphragm pump in the past, is perhaps temperature a problem? Is the corrosion inhibitor hot?
RE: Diaphragm Failure.
RE: Diaphragm Failure.
Your data sheet is lacking the corrosion inhibitor information. What exactly is the fluid that you are pumping.
Have the manufacturer make a recommendation based on the corrosion inhibitor.
Check that the diaphragm that you are presently using is suitable for the corrosion inhibitor.