Patent ID: 9195240
Filing Date: 2015-11-24
Classification: F16K,F17D,G05D,Y10T

Abstract:
1. A valve assembly adapted to be used in an environment having an environment pressure, the valve assembly comprising: a body having a first end and a second end, the second end being adapted to connect to a pipe, the pipe having a first fluid line at a first pressure and a second fluid line at a second pressure, the first fluid line being disposed coaxially with the second fluid line; a primary passageway defined through the body, the passageway having a first end coinciding with the first end of the body and a second end coinciding with the second end of the body, the second end of the primary passageway being adapted to be connected to the first fluid line; a secondary passageway defined in the body, the secondary passageway having a first end and a second end, the secondary passageway being fluidly isolated from the primary passageway, the second end of the secondary passageway being adapted to be connected to the second fluid line; and a valve disposed on the primary passageway between the first end and the second end, the valve being movable between a first position where the primary passageway is open and fluid communicates between the first end and the second end of the primary passageway and a second position where the primary passageway is closed and fluid is prevented from communicating between the first end and the second end of the primary passageway, the valve being adapted to be movable to the first and second positions in response to the second pressure in the secondary passageway; wherein the first pressure in the primary passageway is greater than the second pressure in the secondary passageway, and the environment pressure is greater than the second pressure in the secondary passageway.