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      • RELEASING SPEAR
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      • TOP DRIVE IBOP
      • INSIDE BOP
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      • CASING SCRAPER
      • NON-ROTARY CASING SCRAPER
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      • MUD PUMP
      • VALVE SEAT AND BODY
      • PISTON
      • CYLINDER LINER
      • HYDRAULIC BUCKING UNIT
      • JAR TESTER
      • FRAC PUMP VALVE RUBBER
      • FRAC PUMP VALVE BODY
      • FRAC PUMP VALVE SEAT
      • FRAC PUMP PLUNGER PACKING
  • PRESS
  • CONTACT
  • HOME
  • ABOUT
  • PRODUCTS
    • DRILLING TOOLS
      • DRILLING MOTORS
      • STABILIZERS
      • DRILL COLLARS
      • DRILLING JARS
      • HYDRAULIC AGITATOR
      • ANTI STICK-SLIP TOOL
      • MULTIPLE ACTIVATION BYPASS VALVE
      • DRILL PIPES
      • NON-ROTATING PROTECTOR
      • X-OVER & SUBS
      • DRILL BITS
      • MICRO REAMER
    • FISHING TOOLS
      • RELEASING SPEAR
      • RELEASING AND CIRCULATING OVERSHOT
      • REVERSE CIRCULATION JUNK BASKET
      • JUNK SUB
      • FISHING MAGNET
      • SAFETY JOINT
      • TAPER TAP
      • DIE COLLAR
      • IMPRESSION BLOCK
      • DITCH MAGNET
      • MILLING SHOES
      • WASHOVER PIPE
    • IBOPs
      • KELLY VALVE
      • FLOAT VALVE
      • FULL OPENING SAFETY VALVE
      • TOP DRIVE IBOP
      • INSIDE BOP
      • DROP-IN CHECK VALVE
    • WELLBORE CLEANING TOOLS
      • CASING SCRAPER
      • NON-ROTARY CASING SCRAPER
      • CASING BRUSH
      • CUTTING BED IMPELLER
      • STRING MAGNET
      • ROTARY CASING GUIDER
      • CASING CUTTER
      • SECTION MILL
    • WELLHEAD TOOLS
      • ELEVATORS
      • ELEVATOR LINKS
      • POWER TONGS
      • MANUAL TONGS
      • SLIPS
      • SPIDERS
      • SPINNING WRENCH
      • BUSHINGS
    • DRILLING EQUIPMENTS
      • MUD PUMP
      • VALVE SEAT AND BODY
      • PISTON
      • CYLINDER LINER
      • HYDRAULIC BUCKING UNIT
      • JAR TESTER
      • FRAC PUMP VALVE RUBBER
      • FRAC PUMP VALVE BODY
      • FRAC PUMP VALVE SEAT
      • FRAC PUMP PLUNGER PACKING
  • PRESS
  • CONTACT

FULL OPENING SAFETY VALVE

TECHNICAL SUMMARY

Full opening safety valve (FOSV), knows as TIW valves, is a hand control valve in drill string circulating system, and it is one of the effective tools to prevent blowout. In the drilling operation, in order to avoid malignant accidents, full opening safety valve shall be connected between drill pipes in drilling process.

FULL OPENING

SAFETY VALVE

Model

OD

Mm(inch)

ID

Mm(inch)

Conn.

Working Pressure

(Mpa)

QK79

79(3 1/8)

20(4/5)

2 7/8HT PAC

 35、70 

QK89

89(3 1/2)

30(1 3/16)

NC26

QK111

111(4 3/8)

40(1 7/16)

NC31

QK121

121(4 3/4)

50(2)

NC38

QK127

127(5)

QK133

133(5 1/4)

60(2 5/16)

NC40

QK159

159(6 1/4)

71(2 13/16)

NC46

QK165

165(6 1/2)

71.4(2 13/16)

NC50

QK168

168(6 5/8)

QK190-1

190(7 1/2)

76.2(3)

5 1/2FH

QK190-2

190(7 1/2)

82(3 1/4)

NC50

SPECIFICATION

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