Pressure Reducing Valve Manufacturer

A back pressure valve is a type of control valve that holds pressure on production vessels such as separators, treaters, and free water knockouts and releases upstream pressure when a designated set point is reached.

The Back Pressure Valve is an “integrated” valve because the pilot the key to opening and closing the valve is connected to the valve and comes out as one piece. The valve monitors upstream pressure. To adjust the set point, turn the adjustment bolt on top. The spring pushes down on the diaphragm assembly, which positions the pilot plug. The pilot plug then allows gas from upstream to push down on the diaphragm. The flow through this valve is from underneath the plunger. The flow pushes up on the plunger as the gas is pushing down on the diaphragm. Because the diaphragm has a larger surface area than the plunger, the same pressure can hold the valve in a closed position. This sets a constant back pressure and the valve will begin regulating the pressure. If pressure exceeds the set point, the upstream pressure pushes up on the diaphragm assembly, closing off the pilot plug. Gas then vents from the top of the diaphragm and the valve regulates the upstream pressure.