• Stepper-Controlled High Flow Proportional Valve 0-3000L/min
Stepper-Controlled Proportional Valve 0-1200L/min
Product Serial:
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 FC-120 FC-300 FC-1000 FC-1500
Valve Type 2-Way Proportional Needle valves
Port Size G 1/8” G3/8" G3/8”
Medium Compatible gases and liquids
Pressure Range -1~7bar -1~5bar -1~10bar
Flow Range of air 0~65L/[email protected] 0~230L/[email protected] 0~400L/[email protected] 0~1200L/[email protected] 2100L/[email protected] bar
Flow Range of water 0~1L/min @6bar 0~4L/min @6bar 0~8L/min @6bar 0~28L/min @5bar 0~43L/min @7 bar
Linearity (10 – 90% ) ±0.1% ±0.5% ±1% ±1% ±3%
Repeatability ±0.1% F.S. ±0.1% F.S. ±0.1% F.S. ±0.1% F.S. ±0.1% F.S.
Flow Resolution 0.1L/[email protected] 0.1L~0.2L/[email protected] 0.3L/[email protected] 0.3L~0.5L/[email protected] 1L~2L/[email protected]
Position Resolution 0.0127 mm/step 0.0127 mm/step 0.0254 mm/step
Temperature Range 0~84°C
Response Time 1.5 sec 2 sec 2 sec 2.5 sec 2.5 sec
Body material Aluminum or Stainless steel
Seals Viton or FFKM
Ingress Protection IP52