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tripplec
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PMV piston cushioning

Sun Apr 29, 2018 3:22 pm

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?

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tripplec
Master Diver
Posts: 271
Joined: Thu Mar 28, 2013 1:44 am
First Name: Chris
Location: Coos Bay Oregon
Contact: Website

Re: PMV piston cushioning

Mon Apr 30, 2018 12:14 am

Never mind. Found it while searching for the same thing I was searching for last time.

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

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SurfLung
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Re: PMV piston cushioning

Mon Apr 30, 2018 9:53 am

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. :)
SurfLung
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