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SCPV Needle Valves

Utilizing the industry's most robust and powerful linear actuator, the stepper-controlled proportional high flow valve, SCPV, is ideal in critical applications where precise gas delivery for medical, analytical and industrial automation is needed. Those applications requiring high resolution, high flow, low hysteresis and variable control of inert gases. In addition, the simple design but unique modifications possible allow for custom flow curves more specific to your application needs.

Clippard SCPV Series Stepper-Controlled Needle Valves

• 2% hysteresis
• Excellent linearity—2.5 of full-scale
• 2 ms reaction time
• Millions of cycles
• Holds position for power savings or at a loss of power
• In-line, manifold and cartridge styles available

Medium: Air and compatible gases
Typical Cycle Time for Full Travel:
    0.95 seconds at 100% duty cycle
    0.55 seconds at 25% duty cycle
    (full open to full close or full close to full open)
Wetted Materials: Stainless steel, aluminum, brass, Acetal and FKM*
Pressure Range: Vac to 100 psig*
Flow Range: 0 to 280 slpm
    Special configurations over 500 slpm available, consult factory
Flow Resolution: 0.7 slpm per step
Position Resolution: 0.001" per step
Temperature Range: 32 to 184˚F
Driver: Bipolar chopper drive required
Needle: 3.5˚
Supply Voltage to Motor: 5 VDC
Response Time: 0.95 sec. fully-open to fully-closed
Mounting: In-line, manifold or cartridge
Power Consumption:
3.85 watts nominal only during adjustment
    0 power consumption to maintain position
Seals: FKM standard, others available
Option: Rubber seat (add "-R" suffix)


SCPVD-1 Stepper-Controlled Proportional Valve Driver

Stepper Motor Driver for Stepper-Controlled Proportional Valves

The SCPVD-1 Valve Driver is a stepper motor driver designed to operate Clippard SCPV Series Stepper-Controlled Proportional Valves in 1/16, 1/8, 1/4, 1/2, and full step modes.

• +7 to +35 VDC supply voltage
• Maximum 2A/phase
• 1/16, 1/8, 1/4, 1/2, and full step modes
• 5V or 3.3V logic inputs (jumper selectable)
• LED power supply indicator light
• Crossover current protection
• Thermal shutdown circuitry

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