Tokyo Ryuki Kogyo Special Assembly Rotameter

For laboratories, we manufacture a combination of 2 to 5 stations, thermometers, pressure gauges, valves, bases, etc.


It is a high-precision area type flow meter that can directly read the instantaneous flow rate of various types of liquids and gases from the scale indicated by the float. The flow rate can be freely adjusted by adjusting the valve. It is used for general equipment and panel mounting in various industries including academic research institutes.

  • FLO-L70 type (with thermometer, pressure gauge, valve, base)
  • FLO-L70 type (with thermometer, double type)
  • FLO-L70 type (special assembly)
  • FLO-PL-9 type (double type)
  • MS33 Type (triple type)

General Specifications

Measuring fluidLiquid (water, cooling water, transparent liquid)
Gas (air, nitrogen, argon, carbon dioxide, etc.)
Scale range10: 1
Maximum flow rateLiquid 7-70L / min
Gas 90-900NL / min
Body materialBrass (BS), SUS304, SS, etc.
Tapered tube materialHard glass
Float materialLiquid SUS304 SUS316
gaseous aluminum
rubber sealNBR, CR (neoprene), byton
Connection methodRc connection
Connection diameterPlease refer to the measurement range table
Flow accuracyWithin ± 2% FS
Mounting directionVertical direction
Flow directionPlease specify by model code
Maximum working pressure0.7MPa
Maximum operating temperature80 ℃ (depending on the material)
Thermal shock 50 ℃ or less
External dimensionsPlease refer to the measurement range table


Ryuki Kogyo

Tokyo Ryuki Kogyo

Tokyo Ryuki Co., Ltd., a manufacturer of industrial flow meters and fluid-related equipment. For many years, we manufacture and sell products such as differential pressure type flow meter, area type flow meter, flow switch, metal tube type flow meter, galvanometer, level meter, and measuring pot.


Classification NoFlow rate displayFlow rate displayConnection diameterExternal dimensions mm
H2O (L / min)AIR (NL / min)Rc
00.001 to 0.010.01-0.11 / 4B345
10.05-0.50.5-51 / 4B345
20.2-2.05-501 / 4B345
30.5-515-1501 / 4B345
Four1-1020-2001 / 2B345
Five2-2040-4003 / 4B475
  • We will manufacture after confirming the fluid name, density, viscosity, pressure, temperature, flow rate range, connection standard, body material, packing material, etc.
  • For liquid measurement (float: SUS304, etc.)
    * Density = 1.0 g / cm3 and viscosity = 1 cP are standard.
  • For gas measurement (float: aluminum, etc.)
    * AIR 20 ° C is flowed, and the flow rate value is converted to the standard state AIR, 0 ° C 1 atm (atmospheric pressure). (Unit: NL / min)
    * Manufactured in standard condition (atmospheric pressure 20 ° C) upon request. (Unit: SL / min)


  • Liquid
    • Water
    • Cooling water
    • Transparent liquid
  • Gas
    • Air
    • Nitrogen
    • Argon
    • Carbon dioxide
    • etc


Flow directionfluidClassificationWet contact materialvalvePacking materialThermometer (t) / Pressure gauge (p)Flow rate range / operating temperature / pressure
FLO-L70-□-□-0 □-T-V-P-□
A [AIR]0BSN [None]1 [NBR]0-None
[Bottom side (right) → Top side (left)]
W [Wed]1SUS304U [top]2 [CR (neoprene)]1-pt available
[Bottom side (left) → Top side (right)]
2SSD [bottom]3 [FKM Byton]2-t available
[Bottom back → Top back]
33-p available

* Detailed contents include flow rate range, working pressure, and temperature conditions.
In addition, please fill in if the fluid is other than air or water.

Model code entry example
example ①FLO-L70-3-A-02-TBS-VU-P1-1 Flow rate range 3 to 30NL / min, temperature 20 ℃, pressure 0.101MPa

Accessories: Not required Product image
⑦Example ②FLO-L70-3 -A-03-TBS-V0-P1-2-2 Continuous flow rate range 5 to 20NL / min, temperature 20 ℃, pressure 0.101MPa (A)

FLO-L70-3-A-04-TBS-VU-P1- 1-2 series Flow rate range 20-200L / min, temperature 20 ℃, pressure 0.101MPa (A) Accessories
: Not required Product image ⑧ Our serial number FM ○○○ ・・ ・ Please tell us (○ is 5 to 6 digits).

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