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Parker Precision fluidics Division
VSO - NORMALLY CLOSED PROPORTIONAL VALVE

VSO - NORMALLY CLOSED PROPORTIONAL VALVE

Product catalog summary

Overview: The VSO® (Voltage Sensitive Orifice) is a miniature solenoid valve designed to control gas flow proportionally to input current. It is suitable for medical and analytical applications, offering precise control with either DC current or pulse width modulation.

Specifications:

Valve Type: 2-Way Normally Closed
Media: Compatible with air, argon, helium, hydrogen, methane, nitrogen, oxygen, and others
Operating Environment: 32 to 131°F (0 to 55°C)
Storage Temperature: -40 to 158°F (-40 to 70°C)
Dimensions: Length 1.785 in, Width 0.625 in, Height 0.67 in
Weight: 2.2 oz
Porting Options: Barbs or 10-32 female; manifold mount

Performance Characteristics:

Operating Pressure: Up to 150 psig
Leak Rate: Internal 0.2 SCCM of He, External 0.016 SCCM of He at 150 psi
Orifice Sizes: Ranging from 0.010 in to 0.065 in
Hysteresis: 7% typical, 15% maximum of full scale current

Features:

Thermally compensated for ideal flow maintenance
High repeatability and long life cycle (100 million cycles)
RoHS compliant and cleaned for analytical and oxygen service use
Serialized performance traceability

Applications:

Gas Chromatography
Mass Spectrometry
Ventilators
O2 Concentrators/Conservers
Anaesthesia Delivery & Monitors
Pressure & Flow Control
Mass Flow Control

Electrical Requirements:

Power: 2.0 Watts maximum
Voltage: Various options available, see detailed table
Electrical Termination: Options include wire leads, PC mount, quick disconnect spade

Installation and Use:

Control: Recommended to use current control for repeatability
PWM Control: Frequency between 5-12kHz, application dependent

Ordering Information: Detailed part ID structure provided for customization based on application needs.

Additional Notes: For optimal application solutions, provide media, pressures, flow rate, voltage, and temperature range when consulting with Parker Precision Fluidics.

VSO - NORMALLY CLOSED PROPORTIONAL VALVE

VSO - NORMALLY CLOSED PROPORTIONAL VALVE

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