The HF PRO is a miniature 2-way normally closed (NC) high flow proportional valve that controls gas flow proportionally to input current with flow rates up to 60 s/lpm at 50 psi/g. The valve can be controlled with either DC current or pulse width modulation along with closed loop feedback to deliver optimal system performance. The HF Pro miniature proportional valve is an ideal choice for applications that require repeatable pressure and flow control such as respiratory and patient monitoring applications.


  • Capable of controllable flow rates of up to 60 s/lpm and pressures of 50 psi/g
  • Provides repeatability across its operating range for improved accuracy
  • Available Oxygen service use clean
  • Proven performance tested to 35 million life cycles
  • RoHS compliant


  • Ventilators
  • O2 Concentrators/conserves
  • Anesthesia delivery
  • Patient monitors
  • Pressure & flow control

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