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13
-23
13
T
emperatur
e Regulator
Temperature Regulator
OB-3,3G
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
OB-3
OB-3G
Application
Cooling
Cold water, Refrigerant
Cooled
Cold and hot water, Oil, Non-dangerous fluid
Max. pressure
Body
0.7 MPa
Thermal valve
1.0 MPa
Maximum temperature
180°C
Temperature
adjusting range
For liquid
40-120°C
15-100°C
For air
40-120°C
15-100°C
Ambient temperature
Set temp. -10˚C or less
Set temp. 30˚C or less
Material
Body
Bronze
Valve, valve seat
Phosphor bronze
Valve spindle
Stainless steel
Bellows
Phosphor bronze
Thermal
valve
For liquid
Stainless steel
For air
Stainless steel with fin
Standard capillary length
2 m
Connection
JIS Rc screwed (union joint)
∙ 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.
Direct acting type
Bellows
Soft seat
Pilot operated type
Diaphragm
Heating
Single valve
Cooling
Double valve
