Back pressure valve

Precision over wide range of flow rates…. Regulator offers high precision. Pressure Regulators offer high. What is the purpose of a back pressure valve in a well head?

Do I need a back-flow valve?

What pressure is needed to open a check valve? The throttled position of the main valve diaphragm assembly is controlled by a pilot valve which senses the upstream pressure. Griffco Valve manufactures chemical feed equipment for pumps and systems including back pressure valves , pressure relief valves , calibration columns, injection valves , and corporation stops. Back pressure valves are a required accessory when metering pumps are pumping to a low pressure injection point below the tank level or when pumping from a bulk tank with a high head pressure. Traditional back pressure valve (BPV) designs use a rising stem globe-type design to modulate the flow of the process fluid.

This design can only influence the flow and cannot control the pressure directly. To control the pressure , an external control loop is require. There are two types of back pressure : Superimposed back pressure.

Superimposed pressure is the pressure in the discharge header before the pressure relief valve opens. Depending on the system, superimposed back pressure can be constant or variable. A type of check valve , typically installed in the tubing hanger, to isolate the production tubing.

The back-pressure valve is designed to hold pressure from below yet enable fluids to be pumped from above, as may be required for well-control purposes. The H back pressure check valve is designed to thread into the tubing hanger for safe removal of the BOP and installation of the Christmas tree. The H two way check valve is installed in the tubing hanger to allow the Christmas tree to be tested. Our selection of back pressure valves and accessories includes: One way check valves. However, the purpose for a pressure relief valves is to control an inadvertent pressure excursions, not for steady state flow control.

BPR’s are also sometimes referred to as pressure sustaining regulators or pressure sustaining valves , especially where used downstream of a pump to maintain pressure. These valves have a history of trouble-free operation and are a favorite in the oil industry. Fine pressure adjustment. Optional air release and gauge port.

Sigmamotor back pressure valves prevent siphoning and varying rates of dosage from fluctuating downstream pressure by enacting positive discharge pressure in your metering pump system. Inside the valve is a diaphragm held in place by a spring which is pressure set. Thus, it reduces downtime and operating cost by allowing for repairs without killing the well.

A back pressure regulator is a normally-closed valve used as an obstruction to reduce flow and maintain pressure upstream.

Unlike the pressure regulator, a back pressure regulating valve must be installed at the END of a piping system. Control pressure upstream of the valve by adjusting the set point to the desired max upstream pressure. Used on separators, heater treaters, compressor stations, and gas gathering systems.

MRSeries is used for backpressure or relief applications in liqui gas, air, and steam service. The Types MR98L, MR98H, and MR98HH are direct-operated and spring-loaded.