Valve actuation system and methods for pipeline valves

Details Valve actuation system and methods for pipeline valves Valve actuation system and methods for pipeline valves

2005-08-16

2005-08-16

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

C251S304000, C137S459000, C137S460000, C137S486000, C137S007000

Reexamination Certificate

active

06929237

ABSTRACT:
The invention is therefore directed to a rotary valve actuating system coupled to a pipeline for a pressurized fluid, the actuating system being coupled to the rotary valve to selectively cause operation of the valve. The valve actuating system comprises at least two reservoirs having an amount of an operating liquid in a first portion being coupled to an external source of pressurized fluid in a second portion thereof. A slideable piston is positioned within each of the reservoirs to isolate the first and second portions, and upon application of pressure from the external pressurized fluid against the slideable piston, operating liquid is supplied to actuate the rotary valve. In this manner, the operating liquid is isolated from the external source of pressurized fluid, such as supplied from the pipeline.

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patent: 6467498 (2002-10-01), Esmailzadeh
patent: 2004/0031523 (2004-02-01), Zeng

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