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Collar Stop

The “F” Collar Stop is designed primarily as an anchoring device for setting bottom hole bumper springs in plunger lift applications.The “F” Collar Stop locates in the recess of API upset and non-upset tubing. The stop is lowered to the required depth, and then lifted upward, tripping the latch springs, allowing the stop arms to engage the collar recess. Jarring downward locks the arms into place.

Priority also has special F Collar Stops with threaded ends to connect to different pieces of tool string.

  • Material Options: Low Alloy Steel and Stainless Steel
  • Standard fishing neck sizes: 1.375 and 1.75
  • Available with threaded or unthreaded fish necks