초록 ▼

A gate valve for a component which includes an elongated body and a flow passage extending generally longitudinally through the body, the flow passage including a generally lateral first branch connected to a generally longitudinal second branch. The gate valve comprises a gate which is moveable gen

A gate valve for a component which includes an elongated body and a flow passage extending generally longitudinally through the body, the flow passage including a generally lateral first branch connected to a generally longitudinal second branch. The gate valve comprises a gate which is moveable generally longitudinally across the first branch between an open position in which a hole in the gate is aligned with the first branch and a closed position in which the hole is offset from the first branch; a conduit which extends through the body from the gate; an actuating mechanism positioned in the conduit for moving the gate from a first position to a second position; and a return biasing mechanism for moving the gate from the second position to the first position; wherein one of the first and second positions corresponds to the open position of the gate and the other position corresponds to the closed position of the gate; and wherein the conduit extends generally longitudinally through the body.

대표청구항 ▼

1. In combination with a component having an elongated body and a flow passage extending generally longitudinally through the body, the flow passage including a generally lateral first branch connected to a generally longitudinal second branch, a closure member comprising:a gate which is moveable ge

1. In combination with a component having an elongated body and a flow passage extending generally longitudinally through the body, the flow passage including a generally lateral first branch connected to a generally longitudinal second branch, a closure member comprising:a gate which is moveable generally longitudinally across the first branch between an open position in which a hole in the gate is aligned with the first branch and a closed position in which the hole is offset from the first branch; a conduit which extends through the body from the gate; actuating means positioned in the conduit for moving the gate from a first position to a second position; and returning means for moving the gate from the second position to the first position; wherein one of the first and second positions corresponds to the open position of the gate and the other position corresponds to the closed position of the gate; wherein the conduit extends generally longitudinally through the body such that the actuating means is generally aligned with the flow passage; wherein the actuating means comprises: a piston which is connected to the gate and which sealingly engages the conduit; and means for conveying hydraulic pressure to a first portion of the conduit which communicates with the piston; and wherein the conveying means comprises a fluid coupling member which is mounted in the conduit and which includes a flow port extending therethrough.