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Flow Wafer-Cone<sup>®</sup> Differential pressure flowmeterVH series

Wafer-Cone VH series

VH series PDF

*Specifications are subject to change without prior notice.

Wafer-Cone® Differential pressure flowmeter is wafer connection version of V-cone flowmeter. Its principle is based on the Bernoulli's theorem like orifice flowmeter. The V-cone inside pipe throttles flow and generates differential pressure corresponding flow rate. The precision cast body made in lost wax process has a simple and rigid construction. Succeeding various features of V-cone flowmeter, it realized low cost flow measurement.


  • · Easy installation with self- centering mechanism
  • · Measuring liquids, gases and steam
  • · Less than 1/5 of orifice straight runs
  • · Stable measurement at low flow rate
  • · Stable low differential pressure measurement allows wide rangeability.
  • · Stable low differential pressure measurement allows low pressure loss.
  • · Durable structure against wear or adhesion
  • · Maintenace free and long stable operation

Short Specifications

Measuring Fluids Liquids, Gases , Steam
(Meter) Size
25, 40, 50, 65, 80, 100 mm
Connection Wafer
Connection Rating JIS10K/20K, ANSI150/300, DIN PN16/40, GB PN1.6/4.0
Fluid Temperature
& Pressure
Compliant with flange pressure and temperature rating
Uncertainty of
Discharge Coefficient
Uncertainty: 1.0%
Turn down ratio: 10:1 (standard)
Reynolds No.: 8000 or more
Differential pressure: 0.025 kPa or more
Materials Body: SCS 14A,
Cone and support: SUS316
V-Cone β Ratio 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80   8 kinds
Pressure Tappings Taper pipe threads, Rc1/4 or Rc1/8, NPT1/4 or NPT1/8
Flow Direction Horizontal or vertical

Wafer-Cone<sup>®</sup> 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.