Pressure reducing valves control the pressure at the outlet side. The pressure reducer type 662 is a diaphragm-controlled,
spring-loaded proportional controller with release. All parts consist of Cr-Ni-Mo steel with smooth surfaces. Setting screw
and spring are integrated so that altering the pressure setting does not charge the height of the unit. The sealing is equal to
or better than VDI/VDE rule 2174.