STE5 pneumatic control cabinet
Sempell™ STE5 is an ATEX approved pneumatic control cabinet for control of the supplementary loading and opening of safety valves. The safety valve will be equipped with a pneumatic actuator that will be connected to the STE5. One or more valves can be connected to the cabinet. All valves will be given supplementary loading. The cabinet have 3 pressure switches that, at indication of higher pressure than set on the switches, switch from supplementary loading to lifting air on a pre-chosen valve. The other valves work now as spring-loaded safety valves. The cabinet will switch back to supplementary loading when the pressure value is lower than set on all 3 pressure switches.
The set pressure of the valves can be checked with the STE5 control cabinet without operation of the safety valve. No interruption of the plant operation.