Check valve KO (M)

Check valve KO (M)

Main Features and Benefits

  • Allows direct circulation through the pump or below the valve;
  • Doesn’t restrict cross-flows of produced fluid;
  • Holds liquid column in the tubing string acting as a check valve;
  • With differential pressure achieved, bypass opens to establish communication across the valve;
  • Tool's components are plated or coated with phosphate.

Application

  • ESP-operated wells;
  • Other well interventions requiring temporary isolation of the tubing string.

Request info

Type
KO (M) 92-40-35
KO (M) 108-52-35
Casing size (in / mm)
3 ⅞ / 98.4
4 ⅜ / 111.1
Valve size
OD (in / mm)
3.622 / 92
4.25 / 108
ID (in / mm)
1.575 / 40
2.05 / 52
Connection* (in / mm)
2.875 NU / 73.03
2.875 NU / 73.03
Length, in, no more than
20.24
20.59
Weight, lbs, no more than
33.1
41.89
Valve Opening Differential Pressure, psi
from above
1.45
21.76
from below
36.26-50.76
36.26-65.27
Working Pressure, psi
5076**
5076**
Total Flow Area of Side Ports, in²
2.17
2.56
Maximum temperature, °F
266***
266***
* Optional box (top) and pin (bottom) thread connections are available.
** Working pressure rating may be increased to 7252 psi.
*** High-temperature (302 °F) model of the valve is available on request.
Higher performance valve available for hostile environments — K2 Model.
Other sizes of the valve are available on request.
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