Fushiman Co.
Fushiman BK45 type bimetal trap for steam

Manufacturer: Fushiman Co.,LTD.
Model: BK45
| Model | Nominal Diameter | Method | Maximum Operating Pressure | Maximum Operating Temperature | Body Material | Connection |
|---|---|---|---|---|---|---|
| BK45 | 15–25 | Bimetal | 2.1 MPa | 400°C | Carbon Steel Forgings | Screw-in flange |
Features
For small-capacity equipment and piping.
Especially suitable for cold environments.
Fail-open type function.
Installation orientation is optional.
Built-in strainer.
Specifications and Materials
| Model | Fluid | Main Applications | Thermosensitive Actuator | Max Operating Pressure | Max Operating Temperature | Valve Box Material | Valve Seat Material | Thermosensitive Actuator Material | Pipe Connection |
|---|---|---|---|---|---|---|---|---|---|
| MK25/2 | Steam Drain | Steam piping, steam tracing, heating equipment, heat exchangers, cylinder dryers, steam-using equipment, especially suitable for cold regions. | Bimetal | 2.1 MPa | 400°C | Cast carbon steel | Stainless steel | Stainless steel | Threaded: JIS Rp Flanged: JIS 20K flat face |
Note: ASME flanged types are also available.
Structure and Dimensions
| Nominal Diameter | Threaded Type A | Threaded Type L (mm) | Threaded Type Mass (kg) | Flanged Type L (mm) | Flanged Type Mass (kg) |
|---|---|---|---|---|---|
| 15 | 1/2 | 95 | 2.2 | 150 | 4.0 |
| 20 | 3/4 | 95 | 2.1 | 150 | 4.5 |
| 25 | 1 | 95 | 2.0 | 160 | 5.0 |
Discharge Capacity

Example of Use
Please refer to page 208 of the technical document titled “Examples of Steam Trap Usage.”
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