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Temperature Regulator
OB-30,30U
OB-31,31U
Direct acting type
Pilot operated type
Bellows
Diaphragm
Soft seat
Features
1. Red handle type is for heating and blue handle type for cooling. It is possible to identify their application at
a glance.
2. Excellent durability and high sealability ensured by valve part of stainless steel and fluororesin.
3. Single valve and balance bellows structure offers stable temperature control without being affected by inlet
13
pressure fluctuations.
4. Easy changeable thermal specification by easy attachment and detachment of the body and thermal bulb.
5. Wide temperature adjusting range, applicable to wide variety of applications.
6. The thermal bulb is usable for heating and cooling, which is common for all sizes (15 to 25A). It is possible
to select models considering the temperature adjusting range only.
7. Easy setting of the initial temperature by handle operation.
Specifications
· Body
Model
Purpose
Application
Maximum pressure
Max. differential pressure
Valve seat leakage
Max. temperature
Body
Material
Valve disc
Valve seat
Connection
-11
13
Heating
Cooling
Single valve
Double valve
For heating
Red
handle
OB-30
OB-30
For heating
Steam, Hot water
1.0 MPa 1.7 MPa for hot water
JIS Rc screwed
JIS Rc screwed (union joint)
www.yoshitake.jp
For cooling
Blue
handle
OB-31
OB-30U
OB-31
1.0 MPa
0.05% or less of rated flow rate
185°C
Bronze
PTFE
Stainless steel
JIS Rc Screwed
OB-30U
OB-31U
For heating
For cooling
OB-31U
For cooling
Cold water, Refrigerant
1.7 MPa
JIS Rc screwed (union joint)
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