Overhaul and well-service equipment

Valves

Back-pressure throttle valves TsKOD (ЦКОД)

The valves provide continuous self-filling of descending boring casing with flushing fluid or cement solution, prevent fluid (solution) from moving backward from hole clearance to boring casing during cementing process. They also provide support for the separation cement plug.

Comparative characteristics TsKOD-146-1 (ЦКОД-146-1), TsKOD-168-1 (ЦКОД-168-1), TsKOD-178-1 (ЦКОД-178-1) and TsKOD-245-2 (ЦКОД-245-2):

  TsKOD-146-1 (ЦКОД-146-1) TsKOD-168-1 (ЦКОД-168-1) TsKOD-178-1 (ЦКОД-178-1) TsKOD-245-2 (ЦКОД-245-2)
Mating dimensions for casing pipes и  couplings:        
— thread ОTTM GOST 632-80

ОТТМ146, BTS-1*

(ОТТМ146, БТС-1*)

ОТТМ168. BTS-1*

(ОТТМ168. БТС-1*)

ОТТМ178, BTS-1*

(ОТТМ178, БТС-1*)

ОТТМ245, BTS-2*

(ОТТМ245, БТС-2*)
— Buttress thread per TU 3665-091-07538145-98 146 168 178 245
Maximum working pressure, MPa (kgf/cm2) 15 (150) 15 (150) 15 (150) 15 (150)
Test pressure, MPa (kgf/cm2) 22 (225) 22 (225) 22 (225) 22 (225)
Valve flow rate, liters/s 60 60 60 60
Operating temperature, max, °С 150 150 150 150
Diameter of valve ball, mm 76±1 76±1 76±1 76±1
Outside diameter, mm 166 188 198 270
Length, mm 325 350 365 365
Weight, kg 19,8 26 29,5 57,2
Minimum diameter Dmin of flow section in diaphragm, mm 60 60 60 60
Diameter of flow section in throttle, mm 10 10 10 20

* option