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Automatic valving unit, and pressure vessel having automatic valving

  • US 5,695,168 A
  • Filed: 05/31/1995
  • Issued: 12/09/1997
  • Est. Priority Date: 05/31/1995
  • Status: Expired due to Term
First Claim
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1. An automatic valving unit for a pressure vessel that holds a cartridge, loose media, and the like for conditioning and/or purifying a fluid, comprisinga valve head having a first passageway extending through it and being adapted to be connected to a fluid transmission line,an outlet port formed at an outlet end portion of the first passageway in the valve head,first valve means positioned in the first passageway of the valve head for blocking flow of fluid through the first passageway of the valve head when the pressure vessel is not connected to the valve head,fluid inlet means formed on the pressure vessel for providing a passageway for fluid into the pressure vessel,said fluid inlet means including first valve actuating means for opening the first valve means when the pressure vessel is connected to the valve head,connecting/disconnecting means formed on the outlet port of the valve head and on the fluid inlet means of the pressure vessel for connecting the pressure vessel to the valve head, when desired, to permit flow of fluid from the first passageway of the valve head to the fluid inlet means of the pressure vessel, and for disconnecting the pressure vessel from the valve head, when desired, to stop flow of fluid from the first passageway of the valve head,an annular passageway portion of the first passageway defined by opposing first passageway walls, said opposing passageway walls being tapered towards each other along the annular passageway portion forming a first valve seat, andan annular seal positioned in the annular passageway portion of the first passageway, the annular seal being sized to block flow of a fluid through the first passageway when the annular seal rests on the first valve seat and to permit flow of fluid through the first passageway when the annular seal is displaced from the first valve seat.

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