Usage Of The Product; Features; Specifications - Yoshitake OB-3 Manual

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.
(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.

3.1 Specifications

Model
Nominal size
Application
Maximum
Pressure
Max. temperature
Temperature
adjusting range
Ambient temperature
Body
Valve, Valve seat
Valve spindle
Material
Bellows
Thermal
bulb
Standard capillary length
Connection

1. Usage of the Product

3. Specifications
Heating
Heated
Body
Thermal bulb
For liquid
For air
Set temperature -10℃ or less Set temperature +30℃ or less
For liquid
For air

2. Features

OB-3
15-40A
Cold water, Refrigerant
Cold and hot water, Oil, Non-dangerous fluid
0.7MPa
1.0MPa
180 ℃
40-120 ℃
Cast bronze
Phosphor bronze
Stainless steel
Phosphor bronze
Stainless steel
Stainless steel
2m
JIS Rc screwed (union joint)
1
OB-3G
15-100 ℃
■EPDT-258a■