单流阀与捞砂泵配合使用，通过螺纹连接分别安装在捞砂泵的两端，其作用是允许流体向上流动，阻止流体向下流动。

主要特性

◎ 配合液压坐封封隔器使用；

◎ 较大的过流面积；

◎ 在高温高压井中应用； 

◎ 一趟管柱完成起下；

◎ 配合捞砂泵使用。

CHECK VALVE

INTRODUCTION

It is mainly used with bailing pump and connected to both ends of the bailing pump. It allows  the fluid to flow upward and blocks the fluid to flow downward.

FEATURES

◎ Used with hydraulic setting packer; 

◎ Large flow area; 

◎ Capable to work under high pressure and temperature;

◎ Single trip; 

◎ Used with bailing pump

Note: Other specification products are available.