欧美日韩亚洲一区_超碰亚洲_国产亚洲在线观看_av在线免_成人免费在线视频_蜜臀成人

The electric device of explosion-proof valve used in coal mine is a professional transformation on the basis of the original electric device of ordinary explosion-proof valve, also known as ZB type explosion-proof valve electric device. Suitable for valves with open and closed parts moving in a straight line, such as gate valve, globe valve, diaphragm valve, water gate valve, etc. For example, after the increase of secondary deceleration can be used for butterfly valve, air valve and air duct valve. Used for opening, closing or adjusting valves, it is necessary to realize remote control and centralized control of valves.

Main features and USES

1. Compact structure, reasonable design and good rigidity of valve;

2. No installation direction requirement, two-way sealing, low flow resistance and long service life;

3. Adopt ZB and ZL series valve electric device for mining, which is safe and reliable;

4. Used in coal mine Wells with explosive gas of methane.

Working environment and main technical parameters

Power supply: motor normal voltage: 380V, 660V (special 127V, 220V, 415V, 440V, 480V, 1140V), three-phase four wire or three-phase three wire;

Control voltage: AC AC: 6V, 12V, 24V, 36V, 42V, 127V

DC: 6V, 12V, 24V, 36V, 48V, 110V

Remote control: DC24V

Working environment:

1. The altitude does not exceed 2000 meters;

2. The environment temperature: - 20 ~ + 40 ℃;

3. The relative humidity: 95% or less (+ 25 ℃);

4. In coal mine Wells with explosive gas of methane;

5. Protection grade: IP55.