Hydraulic valve operator

Details Hydraulic valve operator Hydraulic valve operator

1995-02-14

1996-11-05

Nguyen, Hoang

Power plants

Pressure fluid source and motor

Having selecting means distributing motive fluid between...

251 58, F16D 3102, F16K 3112

Patent

active

055705812

ABSTRACT:
A hydraulic valve operator includes a pair of reversible, variable speed hydraulic motors mounted on a swivel housing which is in turn mounted to an extendable frame assembly. The motors are disposed on diametrically opposite sides of a bull gear cavity formed on the swivel housing into which is placed a bull gear. The bull gear is meshed with pinion gears driven by the respective hydraulic motors. The bull gear has a vertically extending swivel bore formed thereon into which nests a drive swivel, the drive swivel being free to rotate about its vertical axis therein. The drive swivel has a vertical drive socket formed thereon for telescopical receipt of an elongated valve drive rod therein. The drive rod has connected at the bottom end thereof a drive head to engage and act upon the drive coupling of the valve stem which is to be rotated to either open or close the respective valve stem.

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