US 12,435,606 B2
Dual direction lift gas valve with cavitation prevention
Joel David Shaw, Houston, TX (US); Reece Eagles, Houston, TX (US); Greg Marshall, Houston, TX (US); and Gerard Patterson, Housto, TX (US)
Assigned to Silverwell Technology Limited, Cambridge (GB)
Filed by Silverwell Technology Ltd., Houston, TX (US)
Filed on May 22, 2024, as Appl. No. 18/671,892.
Application 18/671,892 is a continuation of application No. 18/355,051, filed on Jul. 19, 2023, granted, now 12,078,040.
Claims priority of provisional application 63/390,853, filed on Jul. 20, 2022.
Prior Publication US 2024/0309738 A1, Sep. 19, 2024
Int. Cl. E21B 43/12 (2006.01); F16K 1/12 (2006.01); F16K 1/38 (2006.01); F16K 3/24 (2006.01)
CPC E21B 43/123 (2013.01) [F16K 1/126 (2013.01); F16K 1/385 (2013.01); F16K 3/246 (2013.01); E21B 2200/02 (2020.05); Y10T 137/2934 (2015.04)] 17 Claims
OG exemplary drawing
 
1. A valve for controlling a flow of fluid comprising:
a body having a sidewall;
a chamber in the body;
first and second valve elements disposed in the chamber that are selectively moveable with respect to one another, the first valve element being an annular sleeve with an axial passage and the second valve element being a valve plug that is selectively inserted into the axial passage when the valve elements are in sealing contact;
sealing surfaces on the valve elements;
a barrier to fluid communication between adjacent valve elements that is selectively formed by bringing sealing surfaces on the adjacent valve elements into sealing contact; and
first and second resilient members on opposing sides of the barrier and each in biasing contact with a one of the adjacent valve elements, the first resilient member in biasing contact with an end of the sleeve opposite the plug and having an outer surface in sliding contact with an inner surface of the chamber and the second resilient member in biasing contact with an end of the plug opposite the sleeve, so that sealing contact between the sealing surfaces is compliant.