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The gas-lift mandrel is a device installed in the tubing string of a gas-lift well onto which or into which a gas-lift valve is fitted. There are two common types of mandrels. In a conventional gas-lift mandrel, a gas-lift valve is installed as the tubing is placed in the well. Thus, to replace or repair the valve, the tubing string must be pulled.
The direction given in the patent that the flange or lip is to be separated from the valve seat by about one sixty-fourth of an inch for an ordinary spring, with less space for a strong spring and more space for a weak spring, to regulate the escape of steam as required, is a sufficient description as matter of law, and it is not shown to be insufficient as a matter of fact.
In 2012, Dover acquired Production Control Systems. PCS has roots in plunger lift and well control holding several patents on plungers and associated equipment. PCS also provides a suite of well controllers and automation systems, and solutions [buzzword] for gas lift and nitrogen generation. They merged with Ferguson Beauregard to become PCS ...
List of steam technology patents. ... (A1), 1986, Boiler fed water heater - has flue gas closed-circuit heat ... 1906, Improvements in valve gear for ...
A gas lift chair is a form of office chair that allows the user to modify their height in relation to the height of a desk, leading to an increase in comfort and ergonomic benefit. A patent describing a common configuration of a gas lift cylinder by John Wang, published 20 May 1989. [1]
Vertical lift check valve. A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [1] Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid ...
Surely, the NFL and CBS hopes for a postseason rematch after the Bills’ 30-21 victory spoiled Kansas City’s perfect record. The outcome also put the Bills (9-2) in range to surpass the Chiefs ...
Desmodromic valve systems are first mentioned in patents in 1896 by Gustav Mees. [ citation needed ] Austin's marine engine of 1910 produced 300 bhp and was installed in a speedboat called "Irene I"; its all-aluminium, twin-overhead-valve engine had twin magnetos, twin carburettors and desmodromic valves. [ 3 ]
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