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| Bypass valve is a valve body, valve kits, spare parts, such as spool and spring components. Its role is to play at the next drill to drill string and annulus Unicom, mud̨not pollute. Normal drilling, the fluid pressure generated by the thrust to overcome the valve core, valve spring suite and static friction force, spool was down, the side-hole valve was closed, when the slurry flows through the motor, pump stops or smaller flows, the spring will be the top spool, the bypass valve in the open spaces. |
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KCYC SERIES AUTOMA..
