Patent ID: 8956126
Filing Date: 2015-02-17
Classification: F04B,F04F

Abstract:
1. A system for evacuating a liquid from a sump pit to a remote location, powered solely by a domestic water pressure in response to a stagnation pressure signal, comprising: a. a housing comprising a diaphragm chamber having a diaphragm assembly responsive to said stagnation pressure signal; and, b. a pushrod connected to said diaphragm assembly and sealably protruding into a tilt rod chamber; and, c. a tilt valve located in said tilt rod chamber and further comprised of a tilt valve rod juxtaposed against said pushrod; and, d. an inlet fluid chamber fluidly separated in an initial closed condition from the tilt rod chamber by said tilt valve; and, e. a check valve assembly comprised of a piston chamber having a large diameter piston end, and a small diameter piston end, and a piston shaft connecting said piston ends, wherein the check valve assembly also comprises a dynamic seal between an ambient pressure chamber and a discharge fluid chamber; and, f. a stagnation pressure standpipe, vertically located in the sump pit and in pneumatic continuity with said diaphragm housing, within which said stagnation pressure signal is generated that controls an operation of a motive flow of said domestic water pressure.