The ESPHL High-Low Pressure Controller is used with safety valve installations to provide automatic opening and closing control for safety valves at present pressure conditions.
The “ESP Sensors” in the unit will sense predetermined high and low pressure limits selected by requirements of the installation. On sensing either of those limits, the unit is designed to close the surface safety valve.
Use the ESPHL to mount two “Sensors” in a series to perform a PSHL function. The sensor may be mounted on any pressure containing device.
The ESPHL Sensor Unit provides a means of directing flowline pressure to sensing ports of two sensors. The unit will block and bleed instrument pressure at a predetermined “High” or “Low” pressure setting to cause downstream safety components to react as programmed.
Learn more about how the products work together