Patent ID: 9435447
Filing Date: 2016-09-06
CPC Classification: B01F,F16K,Y10T

Claim Text:
1. A directional control valve for fluid that is adapted to make up a solution in situ by mixing two ingredients coming from a first reservoir and from a second reservoir, said valve comprising: a body defining an axial chamber and being provided with radial first and second inlet/outlet (I/O) ports designed to be connected to said first reservoir and to a feed pump, and with a radial administering port adapted to enable said solution to exit, said first and second I/O ports and said administering port communicating with said chamber; and a rotary spool received in said chamber and through which link channels pass, said spool being provided with axial third and fourth I/O ports designed to be connected to said second reservoir and communicating with said link channels, said link channels being arranged to interconnect said first, second, third, and fourth I/O ports and said administering port selectively and for fluid flow, depending on the angular position of the spool relative to said body so that, in a first angular position, they connect said first I/O port to said third I/O port, and close off said second I/O port and said fourth I/O port so that, by means of said feed pump ( in a second angular position, said link channels connect said first I/O port to said third I/O port and connect said second I/O port to said fourth I/O port so that, by means of said feed pump, they enable the mixture to be transferred and blended between said first and second reservoirs; and in a third angular position, said link channels connect said first I/O port to said administering port, and close off said second I/O port, said third I/O port, and said fourth I/O port so that, by means of said feed pump they enable the resulting solution to be administered.