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Incremental circulating valve is a kind of by-pass valve, connect it close to drill bit before drilling oil and gas layer, and when drill bit was blocked in killing well operation, the by-pass valve can set up a new circulation channel and continue to implement killing well operation.
Model | OD | ID | Ball Diameter | Connection |
mm (inch) | mm (inch) | mm (inch) | ||
JZX105 | 105 (4-1/8) | 38 (1-1/2) | 38(1-1/2) | NC31Bxp |
JZX121 | 121 (4-3/4) | 50.8 (2) | 48 (1-7/8) | NC38 Bxp |
JZX160 | 160 (6-5/16) | 50.8 (2) | 65 (2-9/16) | NC46 Bxp |
JZX178 | 178 (7) | 57.2(2-1/4) | 65 (2-9/16) | 5-l/2FHBxp |
JZX203 | 203 (8) | 57.2 (2-1/4) | 70 (2-3/4) | 6-5/8REGB xp |
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