Technical Note

Valve assemblies for Q550 tools

Earlier version of valve assemblies Q‑043 could be disassembled.
An opening at the top of the actuator allowed to use the Allen key to detach the actuator cap.

Improvements were made to some components. The new version of valve assemblies can no longer be disassembled in order to make the new design fully compatible with all tools. Attempt to disassemble the new valve assembly will damage the components.

old version
of actuator Q‑042

new version
of actuator Q‑142

Valve assembly Q‑043V

  • Fits Q550 with the first version of the Primpact module. This version was standard in all tools with Serial Number less than "363000"  See Technical Note.
  • Valve Q‑043 is no longer available; order replacement valve Q‑143V; it will fit all Q550 tools.

 Valve assembly Q‑143V

  • Fits all versions of Q550 tools; retro-compatible with first version of valve assembly. See Technical Note.

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