And if the O-ring did pass the opening that would create a path from the
fluid circuits to the switch (which will not seal against the pressure - or
at all).
PDWA is an acronym for Pressure Differential Warning Actuator. If it did
more than just light the light the acronym would be different.
Great links.
Dave
In a message dated 5/27/2013 7:56:06 PM Central Daylight Time,
fishplate@charter.net writes:
> See http://www.vtr.org/maintain/pdwa.shtml - the piston is a constant
> diameter. How would it shut off flow, without some careful positioning
> of the o-ring, which shouldn't easily seal a round hole in the side of
> the bore anyway.
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