• Miniature Proportional Valve 0-32L/min
Stepper-Controlled Proportional Valve 0-65L/min
Product Serial: FC-20+PM-20
Series PM provides series FC with the required power and control signal (step and direction). It controls the step of a bipolar stepper motor with an analogue signal (1-10 Vdc/4-20mA/RS485 Modbus).

Utilizing the industry’s most robust and powerful linear actuator, the high-flow stepper-controlled proportional valve outperforms the competition in performance and durability.
This valve is ideal in critical applications such as gas delivery, medical, analytical, and industrial automation requiring high resolution, high flow, and low hysteresis. In addition, the unique design allows for custom flow profiles when required.


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-20
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 0~65L/[email protected]
Flow Range of water 0~1L/min @6bar
Repeatability ±0.1% F.S.
Flow Resolution 0.1L/[email protected]
Temperature Range 0~84°C
Full Stroke Time 1.5 sec
Body material Aluminum or Stainless steel
Seals Viton or FFKM
Ingress Protection IP52
Series Type     Type   Input Signal
FC 20 + PM 20 - E
  20: 0~65LPM     20: For FC-20   **E: 0-10V
120: 0~230LPM  120: For FC-120 A: 4-20mA
300: 0~400LPM 300: For FC-300 R: RS485 Modbus
1000: 0~1200LPM 1000: For FC-1000  
  1500: For FC-1500  

* For Command Signal type 0-10V, the minimum driving current is 3mA.
** The indicated flow rate is air, please consult for liquid flow rate.
★Please contact us for customized flow range.