砾石充填时保持畅通，充填完成起出内管柱后通道关闭，作业时防止完井液 漏入地层。

主要特性

◎ 采用陶瓷材质板阀，必要时可击碎，操作简单可靠；

◎ 内部设计有保护套，方便工具顺利通过，保护阀板及阀座密封不被损坏；

◎ 板阀在反向压差下自动开启，可反复长期使用；

◎ 拉伸弹簧复位机构大大增加工具的使用寿命。

FVF FLUID LOSS CONTROL VALVE

INTRODUCTION

Fluid loss control valve is one of the nonessential tool of COHP, which can keep the smooth of operation when pack. After service tools assembly pulls out of hole, FVF can prevent completion fluid leaking into formation.

◎ FVF with Ceramic structure can be crushed if necessary, operating easily and reliably;

◎ FVF with inner protection shroud makes tools pass through easily, and protects ram and valve seat undestroyed;

◎ FVF can easily open under reversed pressure, which can be repeated several times with  no damage;

◎ FVF has extension spring reset unit, which can increase the life of tools.

Note: Other specification products are available