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1. (WO2015047747) PRESSURE EQUALIZING VALVE

Pub. No.:    WO/2015/047747    International Application No.:    PCT/US2014/055375
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Sat Sep 13 01:59:59 CEST 2014
IPC: F16K 39/04
E21B 34/06
F16K 3/02
Applicants: GE OIL & GAS PRESSURE CONTROL LP
Inventors: MCEVOY, Travis, Kyle
COMEAUX, David, Daniel
CHEATHAM, Lloyd, Ray
YORK, Edward
Title: PRESSURE EQUALIZING VALVE
Abstract:
A gate valve (11) includes a body with a flow passage (17, 19) intersected by a gate cavity (15) and a gate (21) with an axis (20), the gate being axially movable in the gate cavity between a gate closed position and a gate open position. A lifting device (25) is in engagement with a stem (34) of the gate to move the gate to the gate open position. A port (57) extends from a first external surface (29) of the gate to a second external surface(53) of the gate. A seal member (59) is mechanically connected to the lifting device, the seal member being moveable in response to axial movement of the lifting device between a seal open position where fluids can flow through the port and a seal closed position where the seal member blocks fluids from flowing through the port.