Top and Bottom sheaves are used matching with the guide rope device which can regulate the wireline trip.The foreign customs are used to taking the top sheave as a part of the stuffing box.We suggest that the clients had better purchase Top and Bottom sheaves together.The most commonly used is 16"pulley.
1.Assembled reinforced bar is provided to increase the stability of sealing head;
2.There are two parts for customers to choose and match:the return valve and the exhaust air module;
3.The maximum liquid control force of bop box and cable scraper is 35MPa,which is convenient for installation
and disassembly and reduces labor intensity.