Precautions for basic operation of gate valve
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Last Update: 2013-10-22
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Source: Internet
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Author: User
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Basic operation of gate valve ① the gate valve with bypass shall be opened before opening (to balance the differential pressure in and out and reduce the opening torque) ② when operating, the human body shall not face the top of the valve stem to prevent the valve stem from being pressed and ejected to hurt people ③ The operation of the switch shall be stable and the force shall be even It is strictly prohibited to use the impact force Generally, it can be operated by hand to avoid using the force lever to operate the new valve ④ The strength design of the hand wheel (handle) is based on the torque value required for operation Therefore, the hand wheel (handle) cannot be used as the operation pedal and any extension lever or spanner to increase the torque excessively, and the rope cannot be used to act on the hand wheel (handle), and then the crane or pulley can be used to operate or lift the valve.
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