Fluid handling – Systems – With flow control means for branched passages
Patent
1997-01-02
1998-06-16
Michalsky, Gerald A.
Fluid handling
Systems
With flow control means for branched passages
137202, 137526, F16K 17168
Patent
active
057655952
ABSTRACT:
An air/vacuum valve throttling device capable of use with an air/vacuum valve in a piping installation is provided. The throttling device has a body with an interior and a number of ports. A vent/admit port connectable to the air/vacuum valve is provided. An outlet port and an air inlet port are also located in the body. A shaft extends from outside the body into the interior and has a plug connected to an end of the shaft so that the plug is located within the interior of the body. The shaft and plug are constructed and arranged to extend into the outlet port. The plug position is adjustable. A rod is also provided having a plug at one end extending into the interior and a retainer at another end outside the interior. A bushing in the air inlet port having an opening to allow the rod to pass therethrough, and a spring is used for resiliently centering the rod in the air inlet port.
REFERENCES:
patent: 1336280 (1920-04-01), Carroll
patent: 1509508 (1924-09-01), Grunwald et al.
patent: 2405241 (1946-08-01), Smith
patent: 3605132 (1971-09-01), Lineback
patent: 4834621 (1989-05-01), Hall et al.
patent: 4941503 (1990-07-01), Hubner
patent: 4998554 (1991-03-01), Rogers
Val-Matic Bulletin No. 100WS revised Aug. 1, 1989 entitled: "Well Service" Air Valves.
Val-Matic Drawing No. VM-S1400VB dated Dec. 23, 1985 entitled Threaded Style Vacuum Breaker.
Val-Matic Drawing No. VMS-506 dated Apr. 1, 1966 entitled Typical Throttling Device.
Michalsky Gerald A.
Val-Matic Valve and Manufacturing Corp.
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