Rectus series 26 updated design

The Rectus Series 26 (brass material) from Parker has been upgraded to a technically improved version which will start to replace the current design as stocks are replenished.

This new design has a lower connecting/ disconnecting force which allows the user to operate with less effort. This is made possible by using a spring with an optimised spring force which also maintains the vacuum stability of the current design.

A further improvement is the placement of the O-ring, which is now seated in a chamber for better protection against possible damage from the front face of the plug, resulting in an extended lifespan.


  • This change affects all Series 26 in brass (single shut off (KA), double shut off (KB) and straight through versions (KF), including all special versions (all O-ring variants and surface treatments).
  • The Series 26KE self venting version is not affected by this change.
  • These technical improvements have no effect on form, fit and function.