In-Line, Composite

Flow Control, Needle Valve, Check Valve

1/8", 1/4", 3/8", 1/2", 3/4" In-Line, Composite Valve Inlet Port

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Overview & Features

This genuine ARO needle valve allows you to increase or decrease airflow in both directions. Our in-line composite models have a lightweight, corrosion-resistant housing and feature a calibrated adjustment knob that allows you to easily set the flow rate, plus a red lock ring to secure your pressure setting.


  • 4-stage tapered needle design provides infinite control settings.
  • Composite body is tough and corrosion resistant.
  • Color-coded micrometer & calibrated adjustment knob provide instant reference points for repeat settings. Press red locking ring down prevents adjustment. Tamper resistant wire supplied in package.
  • Units have a threaded body for easy remote panel mount installation.
  • Needle Valve is available with stainless steel needle & zinc-plated pipe port inserts. Order 104104-NS2

Needle Valves are often used to control the air volume supplied to the Diaphragm Pump to control pump speed.

  • Order model 104104-NO2 for 1/4" to 1" Diaphragm Pumps