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Temperature Regulator – Annex
CAUTION
Piping example
Adjustment
Taking a wrong adjusting procedure may cause hunting, scale problems or water hammer, and can heavily
damage the main parts of the product. Be sure to follow the procedure below.
1. Close the stop valves at the inlet and outlet sides of the product. Open the bypass stop valve and blow
fluid through the bypass line with enough time. After discharging, be sure to close the bypass stop valve.
Be sure that fluid temperature does not exceed the max. temperature while blowing.
2. Turn the adjustment screw and move the indicator to the desired temperature position on the scale. To
raise the temperature, turn the screw clockwise. To lower the temperature, turn it counterclockwise.
3. Slowly open the inlet stop valve to its full open position, and then, open the outlet stop valve little by little
to its full open position.
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4. Adjust the screw till the desired temperature is obtained while watching the thermometer with enough time.
5. Scale reading and set temperature
The table show the set temperature per scale reading as a guide. Because the temperature varies slightly
according to conditions of use, adjust the screw till the desired temperature is obtained.
Scale reading
Adjustment range
0.5
1.0
1.5
2.0
2.5
Completely discharge the internal pressure from the valves before disassembly.
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Please refer to the manual attached to the product for procedures for installation and operation.
Pressure gauge
Union
Strainer
Stop
valve
By-pass
Globe valve
-8-15°C
10-36°C
-11°C
4°C
- 2°C
15°C
6°C
25°C
14°C
34°C
21°C
43°C
Thermometer
OB-2000
Temperature regulator
Union
Stop
valve
Stop
Sight glasses
valve
Strainer
Blow
Steam trap
30-62°C
55-94°C
22°C
37°C
49°C
58°C
67°C
www.yoshitake.jp
Safety
relief valve
Hot water
Thermal bulb
Storage tank
Heating coil
Water
80-127°C
45°C
68°C
61°C
89°C
76°C
107°C
91°C
125°C
106°C
147°C
OB-2000 series
OB-2000 series
115-183°C
101°C
130°C
153°C
178°C
210°C
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