KNUCKLE JOINTS

KNUCKLE JOINTS

The Knuckle Joint, when incorporated between the jars and the manipulation tool, provides additional flexibility in the tool string. The Knuckle Joint allows a full 360° rotation of the tool string and provide a full 15° angular deviation and internal pressure sealing throughout the full rotation of the tool. The ball and socket of the knuckle joint provide the rotation and angular deviation of the tool. Seals in the ball provide the sealing capability.

KNUCKLE JOINT
Maximum O.D. (in) Minimum I.D. (in) Tensile Strength (Standard Service) Make-up Length (in) Internal Ball Clearance (in) Angle Of Deviation
1.687 0.500 40,000 LBS 10.461 7/16 15°
1.750 0.500 60,000 LBS 10.461 7/16 15°
2.125 0.500 56,000 LBS 9.260 7/16 15°
2.375 0.750 60,000 LBS 9.604 11/16 15°
3.125 1.000 100,000 LBS 11.000 15/16 15°

TYPES OF KNUCKLE JOINTS