Japan, Maeda Koki
Maeda Koki MKTV Type Water Signal

Made in Japan
Manufacturer: Maeda Machinery Research Institute Ltd.
Model: MKTV Type
Features of MKTV Type
- Flow rate can be seen visually
- Since a transparent tapered tube is used, it is possible to check the approximate flow rate by looking at the relative position of the ball (or float) and the red line.
- With flow rate adjustment valve The required flow rate can be set by adjusting the miniature valve and aligning the ball with the red line .
- No matter the installation direction. Since a spring is used inside, the orientation when installing can be freely adjusted such as upward, downward, sideways, etc.
Model list
Model | Dimensions (mm) | Standard specification flow rate (approx. L/min) | Flow curve table *Standard specifications | |||
connection | full length | Overall width | Depth | |||
MKTV25-1TW | RC1/8 | 94 | twenty five | 51 | 1 to 5 | ![]() |
MKTV25-2TW | Rc1/4 | 95 | twenty five | 51 | ||
MKTV25-3TW | Rc3/8 | 99.5 | twenty five | 51 | ||
Specifications

| Specification | Details | Additional Information | |
|---|---|---|---|
| Fluid | Water | – | |
| Flow | See above | Please contact us if you require a flow rate below or above the standard specification. | |
| Connection | Rc female thread | Change to R male thread. Combination with R male thread is also possible. | |
| Heatproof Temperature | Maximum 80℃ | – | |
| Pressure Resistance | 1MPa | – | |
| Material | Transparent Tube | Acrylic | – |
| Fittings | C3604 (Brass) | – | |
| Spring | SUS304 | – | |
| Nylon Ball | Nylon 66 | In some cases, cylindrical floats are used. | |
| Miniature Valve | B.C. | – | |
| O-Ring | Nitrile Rubber | – | |












