Dart valves
5,000 psi, 10,000 psi & 15,000 psi
Designed for automatic overlap and pressurization of the drilling instrument tube channel in drilling oil and gas wells, and also in maintenance and emergency works.
Dart valve structure allows carrying out maintenance works under field conditions. The valves are produced with the right and left directed coupling thread coils.
*Increased strength and durability
Dart valve for drill string with the locking thread type KOSHZ
Dart valve | Cargo capacity kN (tf) | Length | OD | ID | Coupling thread API 7 | Weight |
---|---|---|---|---|---|---|
KOSHZ-73R1 | 500 (50) | 0.82 ft / 250 mm |
3 3/8"/ 86 mm |
1 3/16"/ 30 mm |
NC-26 (2 3/8 IF) | 11.02 lbs/ 5 kg |
KOSHZ-76R1 | 500 (50) | 0.90 ft / 275 mm |
3 3/4"/ 95 mm |
1 1/2"/ 38 mm |
2 7/8 Reg | 15.43 lbs/ 7 kg |
KOSHZ-86R1 | 1000 (100) | 1.02 ft/ 310 mm |
4 1/4"/ 108 mm |
1 9/16"/ 39 mm |
NC-31 (2 7/8 IF) | 28.66 lbs/ 13 kg |
KOSHZ-88R1 | 1200 (120) | 1.07 ft/ 325 mm |
4 1/4"/ 108 mm |
1 1/4"/ 32 mm |
3 1/2 Reg | 33.07 lbs/ 15 kg |
KOSHZ-102R1 | 1400 (140) | 1.18 ft/ 360 mm |
4 6/8"/ 120 mm |
2 1/16"/ 52 mm |
NC-38 (3 1/2 IF) | 35.27 lbs/ 16 kg |
KOSHZ-108R1 | 1600 (160) | 1.30 ft/ 395 mm |
5 1/4"/ 133 mm |
2 1/16"/ 52 mm |
NC-40 (4 FH) | 37.48 lbs/ 17 kg |
KOSHZ-117R1 | 1800 (180) | 1.31 ft/ 400 mm |
5 1/2"/ 140 mm |
2 1/16"/ 52 mm |
4 1/2 Reg | 39.68 lbs/ 18 kg |
KOSHZ-121R1 | 2100 (210) | 1.31 ft/ 400 mm |
5 3/4"/ 146 mm |
2 1/4"/ 58 mm |
4 1/2 FH | 44.09 lbs/ 20 kg |
KOSHZ-122R1 | 2200 (220) | 1.35 ft/ 410 mm |
5 3/4"/ 146 mm |
2 1/4"/ 58 mm |
NC-46 (4 IF) | 44.09 lbs/ 20 kg |
KOSHZ-133R1 | 2500 (250) | 1.36 ft/ 415 mm |
6 1/8"/ 155 mm |
2 1/2"/ 64 mm |
NC-50 (4 1/2 IF) | 72.75 lbs/ 33 kg |
KOSHZ-147R1 | 2600 (260) | 1.53 ft/ 465 mm |
7"/ 178 mm |
2 7/8"/ 73 mm |
5 1/2 FH | 114.64 lbs/ 52 kg |
KOSHZ-152R1 | 4000 (400) | 1.64 ft/ 500 mm |
7 3/4"/ 197 mm |
3"/ 75 mm |
6 5/8 Reg | 132.28 lbs/ 60 kg |
Dart valve for pump-compressor flexible pipes with tubing thread type KOSHT
Dart valve | Cargo capacity kN (tf) | Length | OD | ID | Coupling thread API 5B | Weight |
---|---|---|---|---|---|---|
KOSHT-38R1 | 110 (11) | 0.69ft / 210 mm |
1 7/16"/ 38 mm |
9/16"/ 14 mm |
NUE-1,315" | 2.76 lbs/ 1.25 kg |
KOSHT-42R1 | 140 (14) | 0.69ft / 210 mm |
1 11/16"/ 42 mm |
5/8"/ 16 mm |
NUE-1,315" | 3.53 lbs/ 1.6 kg |
Dart valve for pump-compressor pipes with tubing thread type KOSHT
Dart valve | Cargo capacity kN (tf) | Length | OD | ID | Coupling thread API 5B | Weight |
---|---|---|---|---|---|---|
KOSHT-42R1 | 140 (14) | 0.46 ft / 140 mm |
2"/ 52 mm |
5/8"/ 16 mm |
NUE-1,660″ | 3 lbs/ 1.4 kg |
KOSHT-48R1 | 180 (18) | 0.49 ft / 150 mm |
2 1/5"/ 56 mm |
7/8"/ 20 mm |
NUE-1,900″ | 3.3 lbs/ 1.5 kg |
KOSHT-60R1 | 300 (30) | 0.61ft / 185 mm |
2 7/8"/ 73 mm |
1 1/8"/ 28 mm |
NUE-2 3/8″ | 6.8 lbs/ 3.1 kg |
KOSHT-73R1 | 500 (50) | 0.66 ft / 200 mm |
3 1/2"/ 89 mm |
1 3/5"/ 40 mm |
NUE-2 7/8″ | 11 lbs/ 5 kg |
KOSHT-73VR1 | 500 (50) | 0.66 ft / 200 mm |
3 5/8"/ 93.2 mm |
1 5/8"/ 43 mm |
EUE-2 7/8″ | 13.2 lbs/ 6 kg |
KOSHT-89R1 | 600 (60) | 0.94 ft/ 285 mm |
4 1/4"/ 108 mm |
2"/ 50 mm |
NUE-3 1/2″ | 26.5 lbs/ 12 kg |
KOSHT-114R1 | 1100 (110) | 0.97 ft/ 295 mm |
5 1/4"/ 132 mm |
2 5/8"/ 67 mm |
NUE-4 1/2″ | 33 lbs/ 15 kg |