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Old 03-01-2019, 12:52 AM   #20
low n' slo
kev2809's Avatar
Join Date: Mar 2009
Location: rosenberg, texas
Posts: 4,061
Re: Trying to fill tank, air escaping through filter

Originally Posted by twinturboc10 View Post
When the switch is off it vents the unloader line and compressor, allowing the compressor to start with no pressure. This reduces startup torque and is easier on the clutch. When the switch kicks on it closes off the unloader line. The compressor then builds pressure until it opens the check valve and begins flowing into the tank.
so the diagram above is correct?

i ordered a check valve with unloader tap in it. i will put my fitting in the check valve and run the line to the square d.

i havent got the valve in yet..but which way does it flow? there were no arrows on the ebay listing pictures when i ordered it
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