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Flow Integral type Wafer-Cone Differential pressure flowmeterVTW series

Wafer-Cone VTW series

VTW series PDF

*Specifications are subject to change without prior notice.

VH series Wafer-Cone® differential pressure flowmeter and small sized Variable Area flowmeter are integrated into one Wafer-Cone® bypass flowmeter.
As the meter requires little straight runs and little head loss compared to orifice plate, it offers you reduction of construction cost and energy saving.


  • · Easy installation with self- centering mechanism
  • · Less than 1/5 of orifice straight runs
  • · Low pressure loss compared to orifices
  • · Any flow direction acceptable and easy-to-change flow direction at flield
  • · Simple construction and easy maintence


  • · HVAC(Heating ,ventilation and Air conditioning) system
  • · Water treatment facilities
  • · Co-generation plants

Short Specifications

Measuring Fluids Water or liquids having equivalent viscosity to water.
Consult Tokyo Keiso about gas measurement.
Flow Range Liquids(in case of density: 1.0g/cm³ and viscosity: 1.0mPa·s)
 Max.: 18 to 90 m³/h (size: 100A)
 Min.: 0.26 to 1.3 m³/h (size: 25A)
Scale range 2 : 10
Fluid pressure Max. 1.0MPa
Fluid temperature Max. 120°C
Connection Wafer type
Rating JIS10K/20K, ANSI Class150/300, DIN PN16/40、GB PN1.6/4.0
Meter size 25, 40, 50, 65, 80, 100(mm)
1, 1-1/2, 2, 2-1/2, 3, 4(inch)
Material Body: SCS 14A, Cone: SUS316, Indicator body: SCS14
Scale plate: Polycarbonate, Tapered tube: Heat-resistant glass
Float: Titanium, O-ring: Fluorocarbon rubber
Indication accuracy ±3% F.S.

Wafer-Cone is registered trademarks of McCrometer, Inc. The flowmeters are designed, fabricated and sold by TOKYO KEISO CO., LTD under the license of McCROMETER, Inc. U.S.A.