CS-AFV单行程止回阀是一种正压关闭装置，用于密封腔体上方的 压力。这些止回阀由装配在锁芯轴上的V型模块组成。 CS-AFV止回阀可以在工具压力不平衡时，自动调节，使压力恢复平衡。CS-AFV止回阀使用A型送入工具和D型接头进行送入。下入时， CS-AFV的内芯轴保持在向下位置，允许流体正常流动，直到阀门锁定 在阀座螺纹接头中。当锁芯卸下并完全安装在正确的阀座螺纹接头中后， 阀门中的端口才会关闭。

CS-AFV SINGLE-TRIP BYPASS  BLANKING PLUG

INTRODUCTION

The CS-AFV Single-Trip Check Valves are positive blank-off devices designed to seal off pressure from  above. These Check Valves consist of a Model V bottom assembled to a lock mandrel.  The CS-AFV Check Valves are designed to be run in one wireline trip and equalized and retrieved in  one trip. The CS-AFV Check Valves are run in with a Model A Running Tool, a Model D Probe. While  running in , the inner mandrel of the CS-AFV is held in the down position allowing fluid bypass until  the Valve is locked into the seating nipple. The ports in the Valve are closed only after the lock is  landed and completely set in the proper seating nipple.

Note: Other specification products are available.