Fluid pressure responsive valve for additive metering system

Details Fluid pressure responsive valve for additive metering system Fluid pressure responsive valve for additive metering system

G - Physics

05

D

137/44

G05D 11/00 (2006.01) F16K 21/02 (2006.01)

Patent

CA 1156125

ABSTRACT OF THE DISCLOSURE A novel system for metering a relatively viscous fluid into a less viscous fluid using a centrifugal pump is described. In particular, a novel valve for use in the system including a fluid pressure responsive means to actuate a needle valve which is slidable into an orifice for control or metering of the viscous fluid is described. The valve meters decreasing small amounts of the viscous fluid in direct relation to the increased pressure developed at the delivery end of the centrifugal pump because of the selection of the angle of the point of the needle and its relationship to the orifice. The system is particularly adapted to metering viscous polymer containing fluids, including microdispersions of polymers as solutions or true solutions into water in very small amounts thereby reducing friction and increasing fluid flow in delivery conduits such as fire hoses and the like.

345558

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