Stepper-Controlled Proportional Valve 0-400L/min

FC-300, PM-300

Stepper-Controlled Proportional Valve 0-400L/min

Proportional Flow Control Valve consists of PM series driver and FC series proportional flow valve. With an input signal either through analogue or digital, the needle inside the proportional valve moves proportionally to the signal. This series is able to control the flow rate of air and liquid with high resolution, high accuracy, and high repeatability. It is developed for industries that require a high degree of adjustment in flow rate.

Series PM driver provides series FC valve with the required power and control signal (step and direction). It controls the step of a bipolar stepper motor with an analogue signal (0-10 VDC/4-20mA/RS485 Modbus).


Input signal VDC 0-10V / 4-20mA / RS485
Supply DC24V (≦12W)
Indicator LED Status
(* with Encoder function )
on/off (LED on is motor running)
on/off (LED off is motor stopping)
on/off (LED flashing is motor error)
*error/null (LED on is encoder error)
*error/null (LED off is encoder normal)
Encoder Resolution 1.587×10-3 mm
Motor Status output Sink 50mA
Temp. Range (Operating) 0-60℃
Cable Length 1 meter, consult for longer cable


Model FC-300
Valve Type 2-Way Proportional Needle valves
Port Size G 1/8"
Medium Compatible gases and liquids
Pressure Range -1~7bar
Flow Range of air 0~400L/min@6bar
Flow Range of water 0~8L/min @6bar
Repeatability ±0.1% F.S.
Flow Resolution 0.3L/min@3bar
Temperature Range 0~84°C
Full Stroke Time 2 sec
Body material Aluminum or Stainless steel
Seals Viton or FFKM
Ingress Protection IP52