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PMV piston cushioning

Posted: Sun Apr 29, 2018 3:22 pm
by tripplec
I recently read an article on line about the pmv making compressor bearings last longer at certain preasure ranges by acting as a shock absorber against the piston to cushion vibration. Anyone know where I might have come across that?

Re: PMV piston cushioning

Posted: Mon Apr 30, 2018 12:14 am
by tripplec
Never mind. Found it while searching for the same thing I was searching for last time.

http://thedecostop.com/forums/showthrea ... Filtration

Re: PMV piston cushioning

Posted: Mon Apr 30, 2018 9:53 am
by SurfLung
My RIX SA3 compressor has a 3rd stage piston that FLOATS in the cylinder, unattached to the piston rod. Pressure is what keeps it in contact with the piston rod. The RIX manual says one of the functions of my Back Pressure Regulator is to get the pressure up fast so that this piston gets into contact with the piston rod and stays that way. So, its not really a cushion as much as it is part of the piston/piston rod connection method. :)