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Thank you very much for choosing the Yoshitake's product. To ensure the correct and safe use of the product,
please read this manual before use. This manual shall be kept with care for future references.
The symbols used in this manual have the following meanings.
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1. Specifications···························································· 1
2. Structure, Dimensions and Weight ································· 2
3.1 Noise characteristic chart ······································· 3
3.2 Flow rate characteristic chart ·································· 3
4. Precautions for installation ··········································· 4
5. Precautions for operation ············································· 5
6.1 Troubleshooting ··················································· 6
6.2 Precautions for maintenance and inspection ·············· 6
MODEL CF-90
Constant Flow Valve
PRODUCT MANUAL
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could result in death or serious injury.
This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.
Table of Contents
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■EPDT-337a■
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Summary of Contents for Yoshitake CF-90
- Page 1 Constant Flow Valve PRODUCT MANUAL Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the product, please read this manual before use. This manual shall be kept with care for future references.
- Page 2 1. Specifications Model CF-90 15～25A Nominal size Application Cold and hot water Max. pressure 1.0 MPa Working differential pressure range 0.2～0.7MPa Application temperature 5～90℃ 1L/min～40L/min Set flow rate (15A、25A) Within ±20% of set flow rate Tolerance of set flow rate (20A) Within ±3L/min of set flow rate...
- Page 3 2. Structure, Dimensions and Weight No. Parts name Body C type retaining rings (internal) Cartridge Label JWWA label Spacer Needle Needle plate Parts No.6 is only for 20A. Parts No.7 and 8 is only for 25A. Internal structure of B (20A) Internal structure of B (25A) (mm) Nominal...
- Page 4 3. Performance characteristic chart 3.1 Noise characteristic chart Noise Differential pressure (The chart shows the noise level at the max. flow rate of each nominal size.) Fig.3.1 Noise characteristic chart 3.2 Flow rate characteristic chart Working differential pressure range Set flow rate (+20~-20%) Flow rate Differential pressure...
- Page 5 To balance the total flow rate, use a bypass pipe to reduce the flow velocity or make other adjustments. (13) The products cannot be used with pipe end core. Bypass Stop valve Stop valve Stop valve CF-90 Constant Flow Valve Strainer Stop valve Fig.4 Piping example ‐5‐ ■EPDT－337a■...
- Page 6 5. Precautions for operation Warning (1) Before leading fluid, make sure that there is no danger when the fluid flows to the end of piping. * If tightening is not secured, hot fluid may spout out and result in burns. * Fluid outflow may cause property damage.
- Page 7 6. Maintenance 6.1. Troubleshooting Trouble Cause Remedy The cartridge is clogged. Clean the cartridge. The cartridge is broken. Replace the product. Confirm the flow rate with the The set flow rate is wrong. No flow indications on the product. Stop valves before and after the Open completely the stop Poor flow product are not completely opened.
- Page 8 Fire, flood, earthquake, thunder and other natural disasters. Consumable parts such as O-ring, gasket, diaphragm and etc. Yoshitake is not liable for any damage or loss caused by malfunction or defect of the product. INTERNATIONAL DEPT. 955-5, Miyamae, Irukadeshinden, Komaki, Aichi, 485-0084, Japan...
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