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Operating mechanism of pneumatic check valve

Release Date: August 18, 2019

Operating mechanism of pneumatic check valve:

1. The opening and closing direction of the pneumatic valve should always be closed clockwise.

2. As the pneumatic valve in the pipe network is often manually opened and closed, the number of opening and closing revolutions should not be too much, that is, the large-caliber valve should also be within 200-600 revolutions.

3. In order to facilitate the opening and closing operation of one person, the maximum opening and closing torque should be 240N-m under the pressure condition of the pipeline.

4. The opening and closing operation end of the pneumatic valve should be square tenon, and its size is standardized and facing the ground, so that people can directly operate from the ground. Valves with roulette are not suitable for underground pipe networks.

5.Display panel for opening and closing degree of pneumatic valve

① The scale of the opening and closing degree of the pneumatic valve should be cast on the cover of the gearbox or the shell of the display panel after the direction is changed, all facing the ground.

② In the case of better management, the stainless steel plate can be used as the material of the indication needle, otherwise it is painted steel plate, and it should not be made of aluminum skin;

③ The indication needle is eye-catching and firmly fixed. Once the opening and closing adjustment is accurate, it should be locked with a rivet.

6. If the pneumatic valve is buried deeper, when the distance between the operating mechanism and the display panel is 1.5m or more from the ground, an extension rod facility should be provided and fixed firmly so that people can observe and operate from the ground. In other words, the opening and closing of valves in the pipeline network is not suitable for downhole operations.