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Temperature Regulator
OB-3,3G
Direct acting type
Pilot operated type
Bellows
Diaphragm
Soft seat
Features
1. Piping can be easily connected due to a union type
connection screw.
2. These temperature regulators do not require any adjusting
tool because equipped with an adjusting handle which
leads to easy adjustment.
3. Since these temperature regulators adopt a dual-valve
structure, the flow rate is larger than that of single-valve
temperature regulators.
4. Excellent accuracy since special packing is used for spindle
gland packing which affects opening/closing operation of
the valve.
5. OB-3G ensures distinguished temperature resistance due
to an external pressure type bellows.
Specifications
Model
Application
13
Max. pressure
Maximum temperature
Temperature
adjusting range
Ambient temperature
Valve, valve seat
Valve spindle
Material
Thermal
valve
Standard capillary length
Connection
∙ Valve seat leakage: Refer to P. -43.
∙ If the ambient temperature is higher than the set temperature or less than 40˚C, use the OB-3G (with external pressure
type bellows).
∙ Available with capillary of up to 5 meter. (Please refer to P. -46 for errors of set temperature).
∙ Available with temperature adjusting range of 30˚C. (For OB-3 only).
∙ Available with thermal well (SUS304 made or with a PTFE cap) for liquid.
-23
13
Heating
Cooling
Single valve
Double valve
Cooling
Cooled
Body
Thermal valve
For liquid
For air
Body
Bellows
For liquid
For air
OB-3
Cold water, Refrigerant
Cold and hot water, Oil, Non-dangerous fluid
40-120°C
40-120°C
Set temp. -10˚C or less
Phosphor bronze
Stainless steel
Phosphor bronze
Stainless steel
Stainless steel with fin
JIS Rc screwed (union joint)
www.yoshitake.jp
OB-3G
0.7 MPa
1.0 MPa
180°C
15-100°C
15-100°C
Set temp. 30˚C or less
Bronze
2 m
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