GAS LINE CONTROL SYSTEM AND MODULAR VARIABLE PRESSURE CONTROLLER

摘要

A pneumatically controlled assembly, system, method and device for the regulation of pressure of a gas as it flows in a pressurized line and including at least one loading valve which is set to respond to variations in pressure in conjunction with a pneumatically actuated process control valve so as to effectively regulate and maintain pressure of the gas in the pressurized line.

主权项

1. A pneumatic valve pressure controller system comprising:
a fluid supply line having an inlet end and an outlet end; a process process control valve fluidly connected to the fluid supply line between the inlet end and the outlet end; a supply regulator fluidly coupled to the fluid supply line upstream of the process process control valve; an actuator operably connected to the process process control valve and having a first pressure chamber and a second pressure chamber; a sensing diaphragm connected to the fluid supply line for determining a relative pressure in the fluid supply line on the outlet end side of the process process control valve; a first loading valve fluidly coupled to the first pressure chamber and responsive to the sensing diaphragm; and a second loading valve fluidly coupled to the second pressure chamber and responsive to the sensing diaphragm; wherein the first loading valve and the second loading valve open and close in response to the sensing diaphragm to change a position of the actuator and thereby operate the process process control valve.