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Multi-fluid flow control device

  • US 5,449,023 A
  • Filed: 08/12/1994
  • Issued: 09/12/1995
  • Est. Priority Date: 08/12/1994
  • Status: Expired due to Term
First Claim
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1. A multi-fluid flow control device comprising an elongate body with front and rear ends, oppositely disposed upper and lower sides and oppositely disposed lateral sides, a liquid conducting chamber within the rear portion of the body, liquid inlet and outlet openings entering the exterior of the body and communicating with the chamber, means to connect the liquid inlet and outlet openings with liquid supply and delivery means, an elongate bore opening entering the front end of the body and communicating with the chamber, water inlet and outlet ports entering sides of the body and communicating with the bore opening between the ends thereof, means to connect the inlet and outlet ports with a water supply means and with a water delivery means, an elongate valve part with front and rear ends and a water transfer passage with upstream and downstream ends between its ends, front and rear seals carried by the valve part forward and rearward of the water transfer passage and sealing between the valve part and the bore opening, said valve part is shiftable longitudinally in the bore opening between a rear position where the rear seal is positioned in the bore opening between the chamber and the water inlet and outlet ports and the upstream and downstream ends of the passage are aligned with the inlet and outlet ports and a forward position where the ends of the passage are out of alignment with the water inlet and outlet ports and the rear seal is positioned forward of the water inlet port and communication is established between the water inlet port and the chamber through that portion of the bore opening between the inlet port and the chamber.

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