nope steve, that's exactly what I have and that's the tank I mean when I say
cistern. I'm just not sure I need a prv between the tank and the house,
because, like you said, the tank maintains between 40 and 70 (I think on mine)
lbs. of pressure.
I'm trying to remember, and I don't think I had one on the old house, which had
a well, too.
----- Original Message -----
From: "Steven Trovato" <strovato@optonline.net>
To: "scott hall" <scott.hall@comcast.net>, "Shop Talk List"
<shop-talk@autox.team.net>
Sent: Monday, March 23, 2009 3:49:18 PM (GMT-0400) Auto-Detected
Subject: Re: [Shop-talk] pressure reducing valve
I have a well. There is a check valve between the well and pressure
tank. This is a tank with air above a bladder or diaphragm that
compresses as the tank fills with water. Is this what you mean by a
cistern tank? Anyway, I have a check valve before that tank that
prevents flow back into the well. Then after the tank there is a
pressure relief valve that will allow water to escape if the pressure
goes over a safe threshold. None of this does any pressure reducing
in routine operation. A control switch turns the pump on when the
tank has 40 pounds of pressure, and off when the tank has 60 pounds
of pressure. Perhaps you have a different type of system?
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