how does it work


Question by  Tracey (128)

How does the water pressure tank work in an rv?


Answer by  loslosbaby (33)

Water isn't compressible, so air is used in RV's to make water pressure. The pressure tank contains a rubber bladder with with air in it. When the RV's water pump pushes water into the tank, it compresses the bladder. When a tap is turned on, the air pushes the water out and through the pipes.

Reply by Porteratthegate (11):
Some old style tanks were fitted with a schrader valve so you could put pressure on the tank to push water through the system. Others had an air pressure pump that pressurized the tank, often connected to a pressure switch that would cut it on automatically when pressure got low.  add a comment

Answer by  cleanc0nscience (45)

The pressure tank contains an air-filled rubber bladder. When water is introduced to the tank, it compresses the bladder. When tap a is turned on, air pushes the water out.


Answer by  LeheckaG (1826)

Water-ressure-tanks usually have a flexible-sealed-bladder of air; when your water-pump is running, it pumps the water-pressure-tank full of water, compressing the sealed-air-bladder. When your pump turns off, the air-bladder is still compressed applying pressure to the water which forces a few gallons water out of the tank when you open a faucet. Water-pressure-tanks ease the start/stop load on your water-pump.


Answer by  Liz59 (10966)

Well, air is used to create water pressure, because you can not compress water. There is a water pump in the rv. When the water pump is used, the air bladder gets used and the air eventually gets compressed. When you turn on the tap of a sink for example, the compressed air forces the water out.

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