Kofloc Model 2600S/2600PVC Constant Flow Valve for Liquid

This is a constant flow valve developed for liquids, and maintains a constant liquid flow irrespective of pressure changes on the primary and secondary sides.


  • Excellent constant flow valve for liquids
    The valve is made of high-precision parts for smooth control.
  • Immune to pressure changes
    The valve keeps the flow constant irrespective of changes in the primary- and secondary-side (outlet-side) pressure.
  • Control of very small flow from 10 ml/min
  • Upper and lower diaphragm chambers equipped with airbreathers
    Air breathing during initial flow setting permits high accuracy control.


  • Analyzers
  • Environmental measuring instruments
  • Liquid mixing equipment


Model 2600-S PVC
Fluid H2O H2O
Flow rating
(at H2O calibration condition)
1-10 ML/MIN 1-10 ML/MIN
10-100 ML/MIN 10-100 ML/MIN
0.1-1 L/MIN 0.1-1 L/MIN
Control accuracy Note 1 ±3% F.S. ±3% F.S.
Operating differential pressure 0.1 MPa or more
Operating pressure 0.1-0.5 MPa
Proof pressure 0.7 MPa
Materials of parts in contact
with fluids
SUS 316, Viton,
fluorocarbon resin
PVC, SUS 316, NBR, Viton
Operating temperature 15-35℃
End connection Rc 1/4 Rc 1/8
Note: The control accuracy is guaranteed only when the fluid temperature is constant,
because the viscosity varies with temperature.
Contact us for the detailed specifications.

Contact us for other ranges and other types of fluids.
Note: The above specifications are subject to change.
Install a filter or the like on the IN side to prevent entry of foreign substances.


Datasheet : Kofloc Model 2600S2600PVC Constant Flow Valve for Liquid

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