| 摘要 |
Pressure regulating equipment for an air cushion, which has a check valve, an outlet of which is connected with a large capacity air cushion such as a balancer, diecushion, etc. of a press. It also includes a pilot operated pressure regulator, an inlet of which is connected with the downstream side of said check valve and the pressure of the downstream side of which is regulated to the same pressure as the pilot air, a pilot pressure regulator giving pilot air to a pilot air receiving port of said pilot operated pressure regulator, a three way valve from which air is discharged by the pilot air and which is connected between the downstream side of said check valve and said air cushion, and a differential pressure operating valve which opens a passage from the upstream side of said pilot operated pressure regulator to a pilot air receiving port of said three way valve by differential pressure between the pilot air from said pilot pressure regulator and air pressure existing in a line between said check valve and said pilot operated pressure regulator.
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