KOSHZ check valves

KOSHZ check valves (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.

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