Yoshitake CF-60 User manual

■EPDT-336a■
MODEL CF-60
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.
The symbols used in this manual have the following meanings.
Warning
This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
Caution
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
1. Specifications·························································1~2
2. Structure, Dimensions and Weight······························ 3~4
3. Performance characteristic chart
3.1 Noise characteristic chart······································· 5
3.2 Flow rate characteristic chart·································· 5
4. Precautions for installation··········································· 6
5. Precautions for operation············································· 7
6. Maintenance
6.1 Troubleshooting··················································· 8
6.2 Precautions for maintenance and inspection·············· 8
Warranty Information

‐1‐ ■EPDT－336a■
1. Specifications
Model CF-60
Nominal size 25～50A 65～100A
Application Cold and hot water
Max. pressure 1.0 MPa
Working differential
pressure range 0.2～0.8MPa
Application temperature
5～60℃
Set flow rate 20L/min～270L/min 100L/min～1000L/min
Tolerance of set flow rate Within ±20% of set flow rate
Connection JIS Rc screwed Flangeless (wafer type) (See below table “Connectable
flange standard table”)
Installation posture Horizontal or vertical installation
●The product conforms to the standard of the Japanese Water Supply Act.
●NPb-treated
Connectable flange standard table
65A 80A 100A
JIS 5K FF ●●●
JIS 10K FF ●●●
ANSI 150lb ●●●
BSEN PN10/16 ●●●
Caution
Please confirm that the indications on the product correspond with the
specifications of the ordered model before use.
* If they are different, do not use the product and contact us.

‐2‐ ■EPDT－336a■
Nominal size Set flow rate and Color of cartridge
25A
Screwed type
20L/min
Green 30L/min Yellow 38L/min Black 50L/min Red 70L/min Light Blue
32A
20L/min
Green 30L/min Yellow 38L/min Black 50L/min Red 70L/min Light Blue
100L/min
Black
w/Hole
40A
40L/min
Green 50L/min White 60L/min Yellow 75L/min Black 100L/min Red 140L/min Light Blue
180L/min
Blue
w/Hole
50A
60L/min
Green 75L/min White 90L/min Yellow 115L/min Black 150L/min Red 210L/min Light Blue
270L/min
Blue
w/Hole
65A
Wafer type
100L/min
Green 125L/min White 150L/min Yellow 190L/min Black 250L/min Red 350L/min Light Blue
450L/min
Blue
w/Hole
80A
140L/min
Green 210L/min Yellow 260L/min Black 350L/min Red 490L/min Light Blue
630L/min
Blue
w/Hole
700L/min
Black
w/Hole
100A
250L/min
White 300L/min Yellow 350L/min Orange
500L/min
Red 700L/min Light Blue
900L/min
Blue
w/Hole
1000L/min
Black
w/Hole
There are two types of black
cartridge.
Black
(The central hollow does
not penetrate)
Black w/Hole
(A hole penetrates in the
center)
Cartridge

‐3‐ ■EPDT－336a■
2. Structure, Dimensions and Weight
・Screwed type
(mm)
Nominal
size d L A B Weight (kg)
25A Rc 1 57 41 - 0.4
32A Rc 1 1/4 61 50 - 0.6
40A Rc 1 1/2 63 58 69 1.0
50A Rc 2 77 70 74 1.4
Fig.1 Structure, Dimensions and Weight
No. Parts name
1 Body
2 Cartridge
3 C type retaining
rings (internal)
4 Label
5 JWWA label
No. Parts name
1 Body A
2 Body B
3 Cartridge
4 O-ring
5 Label
6 JWWA label

‐4‐ ■EPDT－336a■
・Wafer type
Fig.2 Structure, Dimensions and Weight
No. Parts name
1 Body
2 Cover
3 Cartridge
4 Low head screw
(mm)
N
ominal
size L A B Weight (kg)
65A 13 147 115 1.0
80A 13 158 126 1.2
100A 13 178 146 1.5

‐5‐ ■EPDT－336a■
3. Performance characteristic chart
3.1 Noise characteristic chart
Fig.3.1 Noise characteristic chart
3.2 Flow rate characteristic chart
Fig.3.2 Flow rate characteristic chart
Noise
Differential pressure
Differential pressure
Flow rate
(The chart shows the noise level at the max. flow rate of each nominal size.)
Working differential
pressure range
Set flow rate
(+20~
-
20%)

‐6‐ ■EPDT－336a■
4. Precautions for installation
Caution
(1) Before installing the product, remove foreign substances and scale from the piping,
and note that seal materials must not flow into the inside of the product or piping.
Commingling of foreign substances such as scale or seal material leads to
malfunction of the product.
(2) To install the product, check the direction of the product so that the fluid flowing
and the mark on the product are in the same direction.
･For screwed connection, the arrow is shown on the label.
･For wafer connection, “IN/OUT” is shown on the fin.
* Wrong direction leads to malfunction of the product.
(3) Install pipes so that excessive load, torque or
vibration is not applied to the product.
(4) When using this product, running sounds occur. Please
install it as far away as possible from places where low
noise is required.
(5) On installation, align center part of the product with that of
flange by making fin-shaped part contact with bolt as
indicated in the right figure.
*The flange, bolt and nut are not included in the bundled parts.
(6) If component having negative effect on inner parts is included in fluid and
environment, deterioration of rubber parts is accelerated and causes outside
leakage and functional disorder.
(7) Impact by rapid pressure change, such as water hammer, breaks the product or
parts.
(8) If fluid cannot flow due to closed piping situation of the product, fluid temperature
rise expands volume of fluid in the piping and damages the product.
(9) Secure enough space needed for maintenance and inspection of the product.
(10) Do not make dissimilar metal piping which causes difference of electrical potential.
If doing so, the product and parts are corroded.
(11) Consider usage condition (usage frequency or durability) when selection.
(12) Install a strainer (mesh size of 60 or 80) at the inlet side of the product.
* Commingling of foreign substances such as scale material leads to prevent the
product from functioning properly.
(13) The majority of product failures are happened due to scales such as sands and
dust in the pipeline. Please pay attention to the dust inside the pipeline.
(14) The products cannot be used with pipe end core.
Fig.4.1 Piping example
Stop valve
Stop valve Stop valve
Bypass
CF-60
Constant Flow Valve
Strainer
Stop valve

‐7‐ ■EPDT－336a■
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.
(2) Close the stop valves before and after the valve, and remove all foreign matter and
scales via the by-pass line before operation.
* Commingling of foreign substances such as scale material leads to prevent the
product from functioning properly.
(3) If case of a possible frozen line, take proper measures to remove water inside the
piping or equip the product with insulating materials.
(4) Do not touch the product with bare hands when the product is used for hot fluid.
* Failure to follow this notice may result in burns.
Caution
(1) Completely discharge the fluid inside of the product and line before leaving the product not
operated for a long time.
* Failure to follow this notice may cause malfunction of the product due to rust inside of the
product and lines.

‐8‐ ■EPDT－336a■
6. Maintenance
6.1. Troubleshooting
* Please contact us for the troubles other than above.
6.2.
Precautions for maintenance and inspection
Warning
(1)
Do not disassemble the product.
* It will cause product malfunction.
(2) Ask professional or experienced company to do the inspection.
(3) Completely discharge the pressure inside of the product, line and equipment before
maintenance. In the case of high-temperature fluid, cool down the product till it can
be touched with bare hands.
* Failure to follow this notice may result in injury or burns.
Trouble Cause Remedy
No flow
or
Poor flow
The cartridge is clogged. Clean the cartridge.
The cartridge is broken. Replace the product.
The set flow rate is wrong.
Confirm the flow rate with the
indications on the product.
It is frozen. Check the piping.
The differential pressure is out of the
specified range.
Review usage conditions.
Flow rate more
than specified
The cartridge is broken.
The O ring of the cartridge is
hardened. Replace the product.
The set flow rate is wrong. Confirm the flow rate with the
indications on the product.
The
differential pressure is out of the
specified range.
Review usage conditions.
Steam leakage
Parts or body is damaged or
deformed. Replace the product.
Installation on piping is loose. Please retighten.