Choke 08
Choke 08 : A restriction of small internal diameter placed in a production string of pipe to reduce flow rates. A positive choke is commonly a piece of steel bar stock externally threaded, and internally bored to a specific diameter then installed in a special (choke) tee at wellhead. A second type is the adjustable choke which is a special valve having calibrated choke opening dimensions marked on a band around the stem. (WT)
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