Don-Nan Insert Guided Cage | Schlumberger

Don-Nan Insert Guided Cage

One-piece, superior-strength guided cage for maximized fluid flow

Extend valve life

The insert guided cage is similar to hard-lined cages but uses a Stellite insert that has been inertia-friction welded in place. This single-piece cage extends valve life in applications that would otherwise fail at a much faster rate due to violent ball rattle caused by turbulent gas and fluid flow.

The insert guided cage is available for use with barrels, plungers, and double-valve configurations. Metallurgy options include MONEL, alloy steel, and stainless steel, all with a Stellite insert.


  • Extends cage life
  • Maximizes fluid flow


  • Available for 1 1/16-in [29.99-mm] through 1 3/4-in [69.85-mm] bore pumps
  • Male and female thread options
Insert-Guided Rod
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