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Correct Measure Vent

Posted By: wwagonman

Correct Measure Vent - Tue Jun 19 2012 01:42 AM

After soaking all the nuts and bolts in PB Blaster for the last year, I am finally, gingerly, disassembling the pump. Using all of the great info on this sight, I have carved out the sealant and am loosening the bolts 1/4 per day. So far, so good.

Tonight, I got the top cover off of the cylinder and could finally see inside. One broken gallons indicator rod, but everything else looks good.

As a curiosity, there is a vent tube at the top of the cylinder that goes to a very small hole. I am not suprised to see a vent, but it appears to have a valve hooked to it inside the cylinder instead of just an opening or tube.

Why a valve? Were there applications (air operated maybe) where they would want to choke off the vent?



Attached picture Correct Measure Venta.jpg
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