EP 3224448 A1 20171004 - HIGH PRESSURE VALVE ASSEMBLY
Title (en)
HIGH PRESSURE VALVE ASSEMBLY
Title (de)
HOCHDRUCKVENTILANORDNUNG
Title (fr)
ENSEMBLE DE SOUPAPE HAUTE-PRESSION
Publication
Application
Priority
- US 201414551821 A 20141124
- IB 2015058195 W 20151023
Abstract (en)
[origin: WO2016083918A1] A valve assembly for high pressure applications includes a pre-charge chamber in fluid communication with a first bellows, at least one inlet for pressurized gas to enter the assembly, a system poppet and an outlet for releasing pressurized gas into a desired environment. The pre-charge chamber and first bellows are filled withpre- charge gas to a threshold pressure. Pressurized gas can flow through access channels into a second bellows, which expands to move a valve shaft connected to the poppet assembly to open the poppet and allow the release of gas. The expansion of the second bellows pushes incompressible fluid disposed between the two bellows against the first bellows, thus contracting the first bellows. The gas within each bellows maintains an internal pressure equal to the pressure exerted upon each bellows by the incompressible fluid, so as to minimize differential pressure across the bellows in the extended position.
IPC 8 full level
E21B 43/12 (2006.01)
CPC (source: EP US)
E21B 43/123 (2013.01 - EP US)
Citation (search report)
See references of WO 2016083918A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2016083918 A1 20160602; EP 3224448 A1 20171004; EP 3224448 B1 20200729
DOCDB simple family (application)
IB 2015058195 W 20151023; EP 15793909 A 20151023