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Multiple Flow Meter with Needle Valve(for Precision Measurement and Control for Laboratory)

Model RK120X Series

This multiple flow meter with a needle valve is made by combining several types of flow meter for controlling various flows in a laboratory. It is designed based on the RK1200, a flow meter with precision needle valve, and has been verified to have outstanding reliability.


  • Multiple control of two to four flow meters
    Two to four flow meters can be attached to one unit to permit control of various gases in various flow ranges.
  • Various flow ranges
    The flow meter can measure a variety of flows ranging from the very small flow of full-scale 5 ML/MIN to 20 L/MIN
  • High-precision measurement and control
    This flow meter is designed based on the precision flow meter RK1200 and permits control of very small flow and high-precision measurement (FS±2%).


  • Control of multiple components
  • Multiple range control
  • Flow control in laboratories


Standard Specifications

Fuilds   Air, N2, O2, H2, He, Ar, CO2 (Calibration with actual gas)
For other gases, please consult us regarding conversion conditions or calibration with the actual gas to be used. 
Flow Range  From 0.5-5 ML/MIN to 2-20 L/MIN (Refer to the Capacity Table on page 55.) 
Accuracy  FS ±2% (Measurement point)
*Optional: FS ±1% (Measurement point) 
Proof pressure  0.5MPa 
Available scale  10:1 *Optional 20:1 
Material SS  BS 
Body block  SUS316 Brass 
Tapered tube  Pyrex®, glass   
Packing  FKM - Option (1)  NBR 
Float  Pyrex, SUS316, glass 
Protective cover  Acrylic resin 
Temperature resistance  MAX60°C 
Connection  Rc 1/4 (Standard), RC 1/8 (Optional) 
* Option (1): Fluorocarbon resin, Kalrez, Perfluoro, etc.



Plants: image 1 Note: Specify the flow rates in increasing order form the left, as many as the number of glass tubes for (4), (5), (6), and (7).
* Refer to "Ordering" and "Illustative example" when placing an order or requesting a quotation. Fill in the blanks in the "Order/Quotation Request Card" at the end of he catalog, and send the card by fax.
[ for more information please call or email us ]