Function & application:Pressure protectswitch. It is widely used on pressure protect of gas pipeline.
功能及用途：压力保护开关。广泛应用于各种气体压力保护。
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At a hastily arranged press conference at the White House after news of the switch leaked overnight, Obama said the aim was to protect against the threat of an Iranian missile attack.
Every machine is equipped with protect travel switch in order to increase safety coefficient for repairing and maintenance. It also has thermal overload relays to protect the motor.