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Pressure switches

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REDSKINS

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Oct 21, 2009, 9:49:43 AM10/21/09
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Hello all.
my water pump is currently operated by micro switches in the taps, If I
fitted a pressure switch to the system, I realise that the switch operates
when the taps open, i.e. when the pressure drops , but what's to stop the
water flowing back in to the tank? is there a one way valve in the pressure
switch?

Regards

Lee

Andy R

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Oct 21, 2009, 12:02:04 PM10/21/09
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"REDSKINS" <reds...@nospam.com> wrote in message
news:ZjEDm.40225$877....@newsfe16.ams2...

There's generally a separate switch and non-return valve.

IMHO, if you've got a working microswitch version, don't change it.
Pressure switches need constant adjustment on battery as the voltage drops,
they switch on for a few secs on the middle of the night as the water temp
(and therefore pressure) drops and if you get a leak they continue pumping
water until it's all gone then burn out your pump.

Rgds,

Andy R


REDSKINS

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Oct 21, 2009, 3:47:58 PM10/21/09
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"Andy R" <and...@ukhome.net> wrote in message
news:7k8pjtF...@mid.individual.net...

Thanks Andy.

what I am hoping to do is to use it on the water inlet pipe to a Dishwasher.
so that when the dishwasher needs water it looses pressure between the
dishwasher and the pressure switch and then operates the water pump. I will
be leaving all the taps on microswitches for the reasons you gave!

Lee

hugh

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Oct 22, 2009, 8:36:37 AM10/22/09
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In message <PzJDm.34937$q07....@newsfe30.ams2>, REDSKINS
<reds...@nospam.com> writes
If you put the 12v feed to it through it's own supply switch then you
will avoid the problems Andy describes - only switch on when you want to
use the dishwasher.
--
hugh
It may be more complicated but is it better?

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