Non-thermal compensated, 2-way normally closed (NC) proportional valve designed for flows up to 56 slpm. Ideal for respiratory and patient monitoring applications that require repeatable pressure and flow control.

Product Information

The MD PRO is a miniature 2-way normally closed (NC) proportional valve that controls gas flow proportionaly to input current for flow rates up to 56 slpm. The MD PRO valve is an economical solution for applications that require repeatable pressure and flow control such as respiratory and patient monitoring applications.
  • Provides repeatability across its operating range for improved accuracy
  • Offers a superior combination of value and performance to reduce system cost
  • Available Oxygen and Analytical Service use clean
  • Proven performance tested to 10 million life cycles
  • RoHS compliant

Typical Applications:

  • O2 Concentrators/Conservers
  • Ventilators
  • Anesthesia Delivery
  • Pressure & Flow Control
  • Patient Monitors

Technical Specifications

Typical Applications:O2 Concentrators/Conservers, Ventilators, Anesthesia Delivery,Pressure & Flow Control, Patient Monitors
Orifice Sizes Available:.040, .050, and .065" (1.01, 1.27, 1.65 mm)
Thermal Compensation:Non-Thermally Compensated
Control Method:Current or Voltage
Cleanliness:Standard, Oxygen Clean
Valve Configuration(Type):2 Way Normally Closed
Life (# cycles):Up to 10 Million Cycles
Pneumatic Connection Options:Manifold Mount w/ Screen, Barbed
Electrical Connection Options:18" Wire Leads, 4 Pin PC Connection, Spade Connection
Leak Rate: Voltage Configurations Available:5.5 VDC, 8 VDC, 11.5 VDC, 13.5 VDC, 20 VDC and 29VDC
Power Consumption (Watts):2.0 Watts Maximum
Weight:2.2 oz (62.9g)


Flow Rate Range:0 to 56 slpm
Pressure Range:0 to 100 psi


Width:0.63 in (16.51mm)
Height:0.67 in (17.02mm)
Length:1.79 in (45.34mm)

Wetted Materials:

Body/Stem Base:360 HO2 Brass, 430 FR Stainless Steel
All other:300 Series Stainless Steel

Data Sheet

Click to download the Technical Specification of MD Pro Miniature Proportional Valve