I don’t know where to go with this one so FHB ‘wins’.
Background: We’re on an island off the coast of Maine — accessible only by boat. We replaced a 50-year water tank with a new one. Approx dimensions are 68″ tall by 30″ diameter. There was no bladder in the old tank and none in the new.
Licensed plumbers did all the new work — original work was done by the island handyman.
The new connection to the pump (Briggs&Stratton engine driving an impeller pump to 50 psi)was made in the lower hole — about 6″ above the floor of the tank. When the pump ran, the tank filled but no air cushion formed. Very unsatisfactory.
The supervising attorney (my brother-in-law) observed that the only thing different was the inlet — the old tank took water in through a hole about 26″ above the bottom of the tank.
The pump connection was moved and the air cushion formed. All is well.
What’s going on here?
Replies
bump...
SYSOP
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This looks like something for the Pros take notice thread,The supervising attorney.
That's a one-up on Mike Smith, a dedicated lawyer to watch the plumbers.
And it still wasn't right? Maybe a team of lawyers was needed?
Joe H
The pump connection was moved and the air cushion formed. All is well.
What's going on here?
Way I remember it, the highest "output" pressure on a tank is lowest in the tank. So, the "least" input pressure would be up near the top; the 26" location. The pump is working "against" 26" less water column to fill the tank (since it's likely to run as soon as there's a demand, if I 'read' your set up right from the description).
I'm not 'getting' you reference to an "air cushion" in this application.
Is this a ground tank, or is it elevated?
Doesn't this tank have a schrader valve to apply air pressure BEFORE it is filled with water ????
Are we there yet ?