国产特级精品毛片视频_久久久久无码精品国产情侣_国产成人99久久亚洲综合精品_毛片国产精品_国产精品18久久久久久久久_日本a视频

The VG… gas valves with their electro-hydraulic SKP70... actuators are designed for use with gas families I, II, III and with air. They are used primarily in gas-fired combustion plant. The actuators open slowly and close rapidly. All types of VG… gas valves can be combined with the SKP70... actuators which are fitted to the valve body by means of 4 screws contained in the terminal compartment. The square flange can be turned in steps of 90°, thus offering a choice of 4 different mounting positions. The actuator can be mounted or replaced while the valve is under pressure. Sealing materials are not required. The SKP70... features an integrated precision gas pressure controller. This type of actuator with its integrated controller not only reduces the length of the gas train, but usually also permits the selection of a smaller valve size (refer to Flow chart in the valve′s data sheet). The actuator can also be supplied with limit or auxiliary switches, e.g. for indicating the fully closed position.