On 8/14/2018 2:37 PM, Arlen Holder wrote:
On 14 Aug 2018 00:54:22 GMT, trader_4 wrote:

The pressure sensor is the pressure control switch that you
previously called a relay. It has a water pipe connection on it.

I see the water pipe that someone mentioned, where it's also a relay based
on all those contacts visible on top.
....

That's why it's called a pressure "switch"

The water pressure compresses the spring until the contacts lift (open)
when pressure reaches the setpoint thus stopping the pump, when the
pressure drops the spring relaxes as the bottom support goes away and
eventually the contacts close turning the pump back on...

Given your system configuration, I'm still curious as to what size pump
is down-hole if you know???

Also, is the a production ag operation or the like so irrigation demands
are extremely high volume as compared to "just" lawn. 10,000 gal would
be about 1/3-rd of an Acre-inch of water or an inch over a third of an
acre which would be pretty hefty for most residences...

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