Witt BPR2 dome-loaded back-pressure regulator

The BPR2 is a dome-loaded back-pressure regulator from German gas systems manufacturer Witt, designed to keep the pressure of gases in processes, system components or tanks constant.

In technical terms, back-pressure regulators regulate a higher inlet pressure, by opening up only as much as necessary to achieve the desired pressure at the inlet. In contrast to spring-loaded systems, the BPR2 controls the gas pressure by means of a dome diaphragm.

This dome-loaded pressure system ensures high precision. Irrespective of the volume or fluctuations in the gas flow, the pressure remains constant — and this is true over the entire performance spectrum of the device.

A typical application is the control of gas blankets in tanks. The overpressure control opens as soon as the supply pressure reaches the set value. The gas is blown off in a controlled manner when the pressure rises, so the pressure in the tank is kept constant. In this way, the BPR2 also provides effective prevention of hazardous overpressure.

The device is suitable for almost all technical gases, including oxygen, in the range 0.5 to 20 bar. Installation can be in any orientation. The wide temperature range from -30 to +50°C ensures it can cover a wide range of common applications. It meets all relevant standards and can even be used in ATEX zones and food environments.