Series 3 REGAL is a spring loaded direct acting setpoint pressure regulator used in industry and commerce. Optionally, this regulator can be equipped with a VSX2 or OS2 shut-off device, which allows you to cut off the gas flow quickly and completely in the event of an overshoot or undershoot of the outlet pressure. The safety valve is supplied as standard for outlet pressures below or equal to 180 mbar.