The drain valve is designed for draining fluid from production tubing, which is retained by check valve. Absence of fluid simplifies dismounting of production tubing and lifting the centrifugal pump from the well.
Type and technical characteristics of drain valve
The type of drain valve and its main technical parameters are presented in the table below.
|Outside diameter||89 mm|
for production tubing
|Smooth tube thread 73 to GOST 633-80|