Valve device for gases

Details Valve device for gases Valve device for gases

1975-02-26

1976-03-30

Rosenthal, Arnold

Valves and valve actuation

With correlated flow path

With mounting or support

251 30, 251134, F16K 3105

Patent

active

039469859

ABSTRACT:
A valve device for gases comprises a pilot valve for controlling the degree of valve opening of a main valve installed in a gas pipe line, a main rotating shaft which can undergo rotation by which the degree of valve opening of the pilot valve is controlled, a sliding member actuated by the rotation of the main rotating shaft to undergo sliding movement in a specific range thereby to control the degree of valve opening of the pilot valve, an electric motor for rotating the main rotating shaft, a screw shaft to which the rotation of the main rotating shaft, after being multiplied in number of revolutions, is transmitted, a moving structure moved translationally by the rotation of the screw shaft, and limit switches disposed at limit positions defining the range of movement of the moving structure and being actuated when the moving structure reaches the limit positions thereby to cut off power supply to the motor. The range of movement of the moving structure is set greater than the range of sliding movement of the sliding member.

REFERENCES:
patent: 3700085 (1972-10-01), Balz
patent: 3720295 (1973-03-01), Balz
patent: 3845788 (1974-11-01), Laven

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