Patent Number: 8,875,730

Title: Control apparatus of vacuum valve

Abstract: A control device is provided with a switching valve mechanism and first and second actuators. The switching valve mechanism is provided with a valve element for switching which is located within a casing. The valve element can linearly move between an open position at which first and second pressure change chambers of the casing are communicated with each other and a closed position at which the communication is interrupted. The valve element is held at the open position and the closed position by a first holding mechanism (toggle spring). When a float ascends to a first water level, the first actuator moves the valve element from the closed position to the open position. When the degree of vacuum within a pressure detection chamber becomes a second degree of vacuum or less, the second actuator moves the valve element from the open position to the closed position.

Inventors: Muraki; Yoshitami (Osaka, JP)

Assignee: Torishima Pump Mfg. Co., Ltd.

International Classification: E03F 1/00 (20060101)

Expiration Date: 2019-11-04 0:00:00