Parker Hydraulic Group
Colorflow® N Series Flow Control Valves

Series N needle valves are ideal as speed controls on hydraulic and pneumatic systems where a reverse flow check is not needed. They provide excellent control and a reliable shut-off in a very small envelope.


  • Steel
  • Brass
  • Stainless Steel

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  • The exclusive “Colorflow” color-band reference scale on the valve stem is a great convenience and time-saver in setting the valve originally and in returning it to any previous setting.
  • A simple set screw locks the valve on any desired setting.
  • A tamperproof option (T) feature is also available to prevent accidental or intentional adjustment of flow setting.


  • A two-step needle allows fine adjustment at low flow by using the first three turns of the adjusting knob. The next three turns open the valve to full flow, and also provide standard throttling adjustments.