KOSHZ Dart valve for drill string with the locking thread
KOSHZ Dart valve for drill string with the locking thread (equivalent: KOB) is intended for automatic overlap and pressurization of the drilling instrument tube channel in drilling oil and gas wells, and also in maintenance and emergency works.
TS 3742-003-79560377-2009
Check valve structure allows carrying out maintenance works under field conditions. The valves are produced with the right and left directed coupling thread coils.
Choose typical size
| KOSHZ-73R1 | |
| Equivalent | KOB-86R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 500 (50) |
| Масса | 11 lbs / 5 kg |
| Length | 9 7/8"/ 250 mm |
| External diameter | 3 6/16"/ 86 mm |
| Nominal drift diameter | 1 3/16"/ 30 mm |
| Coupling thread, API 7 | NC 26 |
| Thread profile form, API 7 | IV |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-76R1 | |
| Equivalent | KOB-95R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 500 (50) |
| Масса | 15.4 lbs / 7 kg |
| Length | 10 4/5"/ 275 mm |
| External diameter | 3 3/4"/ 95 mm |
| Nominal drift diameter | 1 1/2"/ 38 mm |
| Coupling thread, API 7 | 2 7/8 Reg |
| Thread profile form, API 7 | I |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-86R1 | |
| Equivalent | KOB-108R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 1000 (100) |
| Масса | 28.7 lbs / 13 kg |
| Length | 12 2/5"/ 310 mm |
| External diameter | 4 1/4"/ 108 mm |
| Nominal drift diameter | 1 9/16"/ 39 mm |
| Coupling thread, API 7 | NC 31 |
| Thread profile form, API 7 | IV |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-88R1 | |
| Equivalent | KOB-108R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 1200 (120) |
| Масса | 33 lbs / 15 kg |
| Length | 12 4/5"/ 325 mm |
| External diameter | 4 1/4"/ 108 mm |
| Nominal drift diameter | 1 1/4"/ 32 mm |
| Coupling thread, API 7 | 3 ½ Reg |
| Thread profile form, API 7 | I |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-102R1 | |
| Equivalent | KOB-120R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 1400 (140) |
| Масса | 35.3 lbs / 16 kg |
| Length | 14 1/5"/ 360 mm |
| External diameter | 4 3/4"/ 120 mm |
| Nominal drift diameter | 2 1/16"/ 52 mm |
| Coupling thread, API 7 | NC 38 |
| Thread profile form, API 7 | IV |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-108R1 | |
| Equivalent | KOB-133R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 1600 (160) |
| Масса | 37.5 lbs / 17 kg |
| Length | 15 3/5"/ 395 mm |
| External diameter | 5 1/4"/ 133 mm |
| Nominal drift diameter | 2 1/16"/ 52 mm |
| Coupling thread, API 7 | NC 40 |
| Thread profile form, API 7 | IV |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-117R1 | |
| Equivalent | KOB-140R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 1800 (180) |
| Масса | 39.7 lbs / 18 kg |
| Length | 15 3/4"/ 400 mm |
| External diameter | 5 1/2"/ 140 mm |
| Nominal drift diameter | 2 1/16"/ 52 mm |
| Coupling thread, API 7 | 4 ½ Reg |
| Thread profile form, API 7 | I |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-121R1 | |
| Equivalent | KOB-146R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 2100 (210) |
| Масса | 44 lbs / 20 kg |
| Length | 15 3/4"/ 400 mm |
| External diameter | 5 3/4"/ 146 mm |
| Nominal drift diameter | 2 5/16"/ 58 mm |
| Coupling thread, API 7 | 4 ½ FH |
| Thread profile form, API 7 | I |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-122R1 | |
| Equivalent | KOB-146R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 2200 (220) |
| Масса | 44 lbs / 20 kg |
| Length | 16 1/8"/ 410 mm |
| External diameter | 5 3/4"/ 146 mm |
| Nominal drift diameter | 2 5/16"/ 58 mm |
| Coupling thread, API 7 | NC 46 |
| Thread profile form, API 7 | IV |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-133R1 | |
| Equivalent | KOB-155R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 2500 (250) |
| Масса | 72.8 lbs / 33 kg |
| Length | 16 3/8"/ 415 mm |
| External diameter | 6 1/8"/ 155 mm |
| Nominal drift diameter | 2 1/2"/ 64 mm |
| Coupling thread, API 7 | NC 50 |
| Thread profile form, API 7 | IV |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-147R1 | |
| Equivalent | KOB-178R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 2600 (260) |
| Масса | 114.6 lbs / 52 kg |
| Length | 18 1/4"/ 465 mm |
| External diameter | 7"/ 178 mm |
| Nominal drift diameter | 2 7/8"/ 73 mm |
| Coupling thread, API 7 | 5 ½ FH |
| Thread profile form, API 7 | III |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
| KOSHZ-152R1 | |
| Equivalent | KOB-197R1 |
| Working pressure, PSI (atm) | from 5000 (350) to 15000 (1050) |
| Cargo capacity kN (tf) | 4000 (400) |
| Масса | 132.3 lbs / 60 kg |
| Length | 19 5/8"/ 500 mm |
| External diameter | 7 3/4"/ 197 mm |
| Nominal drift diameter | 2 15/16"/ 75 mm |
| Coupling thread, API 7 | 6 5/8 Reg |
| Thread profile form, API 7 | III |
| Ambient temperature, °С: | from -40 to +100 |
| Handling medium: | drill and grouting slurry, oil, gas |
