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ZJS type hydraulic accelerator is used in conjunction with the YSJ type hydraulic up jar or the CSJ type super fishing jar. When used, the tool is connected to the upper end of the hydraulic up jar (it is suggested to connect 1 to 3 drill collars between them), so as to obtain a greater upward jarring force. Ithas the characteristics of compact structure, reliable seal and high strength.the working temperature range: -20 °C ~ 150 ℃. 

 ZJS type hydraulic accelerator is used in conjunction with the YSJ type hydraulic up jar or the CSJ type super fishing jar. When used, the tool is connected to the upper end of the hydraulic up jar (it is suggested to connect 1 to 3 drill collars between them), so as to obtain a greater upward jarring force. Ithas the characteristics of compact structure, reliable seal and high strength.the working temperature range: -20 °C ~ 150 ℃. 
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