Manual override for hydraulic gate valve actuators

Details Manual override for hydraulic gate valve actuators Manual override for hydraulic gate valve actuators

1978-12-26

1980-07-22

Schwadron, Martin P.

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

251 14, 251267, F16K 3700, F16K 3100, F16K 3144

Patent

active

042134803

ABSTRACT:
A double acting manual override mechanism for the hydraulic actuator of a subsea gate valve, and a visual indicator device for indicating the gate position. The gate is normally held open by hydraulic pressure and is moved by a spring to a fail closed position in the event of a malfunction. The override includes a drive nut threaded onto the valve stem and a drive sleeve which is telescoped on the drive nut and connected therewith by a series of splines. Spaced apart abutment surfaces are provided on the sleeve to limit axial movement of the drive nut on the valve stem in both directions. Rotation of the sleeve by means of an adapter is translated into rotation of the drive nut which contacts one of the abutment surfaces and thereafter effects axial movement of the valve stem to open or close the gate. The indicator device includes a watertight, transparent housing within which an indicator disc moves in response to movement of the gate.

REFERENCES:
patent: 951927 (1910-03-01), Whitney
patent: 2114139 (1938-04-01), Grosthwait, Jr. et al.
patent: 2633868 (1953-04-01), Berhoudar
patent: 2919590 (1960-01-01), Griswold
patent: 2919883 (1960-01-01), Murphy
patent: 3198034 (1965-08-01), Witte et al.
patent: 3244399 (1966-04-01), Jones et al.
patent: 3378224 (1968-04-01), Boyle
patent: 3466001 (1969-09-01), Nelson
patent: 3889922 (1975-06-01), Peters

Affiliated with

Also associated with

Rating

Manual override for hydraulic gate valve actuators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manual override for hydraulic gate valve actuators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manual override for hydraulic gate valve actuators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2174797