Patent ID: 11953098
Assignee: ADEMCO INC.
Field: Control (Instruments)
Classification: CPC F  G | IPC F

Claim 0:
1. A valve comprising:
a restricting element comprising a valve stem and a valve disc coupled together;
a valve body defining a pressure chamber,
wherein the valve body defines a flow path from a high pressure side of the valve to a low pressure side of the valve;

one or more valves in fluid communication with the pressure chamber,
wherein the one or more valves are configured to enable a liquid having a fluid energy to flow to the pressure chamber;

a diaphragm configured to position the restricting element using a first portion of the fluid energy,
wherein the diaphragm is configured to move the restricting element based on a pressure of a fluid in the flow path; and

an energy accumulator configured to generate stored energy using a second portion of the fluid energy,
wherein the energy accumulator is configured to establish a gas-fluid interface between the liquid and a gas in the energy accumulator,

wherein the pressure chamber is configured to deliver the first portion of the fluid energy to the diaphragm,
wherein the pressure chamber is configured to deliver the second portion of the fluid energy to the energy accumulator,
wherein the energy accumulator is configured to exert a pressure on the liquid in the pressure chamber, and
wherein the diaphragm is configured to adjust the position of the restricting element when the energy accumulator exerts the pressure on the liquid in the pressure chamber and the pressure chamber is fluidly isolated from the flow path by the one or more valves.