Valve arrangement for a pressurized water purifier
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United States of America Patent
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Mar 28, 1995
Grant Date -
N/A
app pub date -
May 11, 1993
filing date -
May 13, 1992
priority date (Note) -
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Abstract
It is proposed, in accordance with the invention, that a pressurized water purifier which includes an inlet conduit, a pressure-elevating pump mounted in the inlet conduit, a filter or membrane type purifying unit, a purified-water outlet conduit and a reject conduit for concentrated contaminated water that the reject conduit (22) includes a pressure-limiting valve (28) which is controlled by the pressure in the outlet conduit (18). This will enable the water purifier to operate at a required, high internal working pressure, while enabling the pressure of the purified water to be maintained at a maximum level limited by the water conduit system and to be varied in response to the water taken from the system in the absence of pulsations.
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