Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1976-09-27
1980-02-26
Schwadron, Martin P.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
13732902, 13732903, 13732904, 166320, 175 38, 251 63, 251324, 251333, F16K 5100
Patent
active
041900731
ABSTRACT:
This apparatus disclosed in its preferred form is a choke for controlling the flow of drilling mud which is highly abrasive. The abrasive drilling mud is introduced through a lateral port and an elongate tubular body. In the tubular body, a fluid actuated, double acting piston is forced to a choke control position. The piston has appended to it a centralized tubular extension which receives a sleeve of wear resistant material. The sleeve is positioned in a circular chamber communicated to the lateral port where the drilling mud is introduced. It travels toward a seat downstream of the body. The seat is formed of hardened material. The downstream outlet of the body is additionally lined with a wear resistent sleeve.
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Schwadron Martin P.
Walton G. L.
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