• proportional pressure regulator
Pressure Proportional Regulator(0-18bar.0-70bar)
Product Serial: QKL-B4S
  • Small Size
  • High Precision
  • High Sensitivity
  • Wide Pressure Range
This series is a complete closed loop servo system consisting of two solenoid valves, internal pressure transducer, and electronic controls. Based on analog signal, the pressure is controlled by two solenoid valves to maintain precise pressure.
This series of proportional pressure regulator has several selection of different input/command signals: 0-10VDC 4-20 mA or RS485 modbus, and the monitor output has 0-10V or 4-20mA.
Type B4S-P18(261psi) B4S-P70(1000psi)
Input Signal 0-10V / 4-20mA/RS485
Output Range 0-18bar 0-70bar
Supply Pressure Max 20bar 72bar
Monitor Output 0-10V / 4-20mA
Supply DC24V (≦4W)
Response 4S 4S
Medium Clean compressed air(filtered 40 μm)
Repeatability ±0.3% F.S. ±0.3% F.S.
Hysteresis ±0.3% F.S. ±0.3% F.S.
Linearity ±0.3% F.S. ±0.3% F.S.
Accuracy ±0.3% F.S. ±0.3% F.S.
Sensitive 0.1bar 0.5bar
Flow Rate 80 L/min at full open 140 L/min at full open
Temp. Range(Operating) 0-60℃
Port Size G1/8" G1/8"
Electrical Connection M12 Connector
Life Cycle Over 1 Billion Times