The VG... gas valves with their electrohydraulic SKP... actuators are designed for gas families
Actuator type SKP2... is equipped with an integrated precision gas pressure governor. This type of actuator with gas pressure governor not only reduces the length of the gas train, but usually also permits selection of a smaller valve size. For detailed information about valve sizing, refer to ?Flow chart?. The actuator is also available with limit and auxiliary changeover switches, e.g. for indicating the fully closed position or for stroke limitation in connection with 2-stage gas release, etc.
Therefore – in contrast to conventional gas / air ratio control – air volume changes due to mains pressure variations, soiled fan wheel, etc., have no impact on the quality of the combustion process.
Actuator SKP2... with gas pressure governor
The gas pressure governor consists of
The setpoint adjustment can be sealed.
The impulse pipe connection is Rp?.
The housings of actuator and governor are made of die-cast aluminium and the seals are made of elastomer.
lever system for actuating a ball valve located in the bypass between the suction and pressure side of the hydraulic system.