■
EPDT-258a
■
1
1. Usage of the Product
The automatic temperature adjustment valves, OB-3, OB-3G, OB-4 and OB-4G, are used in the systems for
ocean vessels, industrial plants, air conditioning equipment, chemical industry, etc. for adjusting the cooling
temperature.
2. Features
(1) As each of the products is equipped with an adjustment handle, additional tools are not necessary and the
adjustment is easy.
(2) As each of the products has multiple valves, its flow rate is larger than that of single valve types.
(3) As special packing is used as gland packing for valve shafts which affects the opening and closing of valves,
the accuracy is excellent.
(4) As the OB-3G and OB-4G types have adopted external pressure bellows, their heat resistance is excellent.
3. Specifications
3.1 Specifications
Model
OB-3
OB-3G
Nominal size
15-40A
Application
Heating
Cold water, Refrigerant
Heated
Cold and hot water, Oil, Non-dangerous fluid
Maximum
Pressure
Body
0.7MPa
Thermal bulb
1.0MPa
Max. temperature
180
℃
Temperature
adjusting range
For liquid
40-120
℃
15-100
℃
For air
Ambient temperature
Set temperature -10
℃
or less Set tempe30
℃
or less
Material
Body
Cast bronze
Valve, Valve seat
Phosphor bronze
Valve spindle
Stainless steel
Bellows
Phosphor bronze
Thermal
bulb
For liquid
Stainless steel
For air
Stainless steel
Standard capillary length
2m
Connection
JIS Rc screwed (union joint)