Thermodynamic Steam Trap – Flanged
Thermodynamic Steam Trap – Flanged is a compact thermodynamic steam trap with a forged steel body. Its only moving part, the disc, opens and closes with the velocity and pressure difference between steam and condensate. It works at high pressures and temperatures.
Contents
Technical Specifications
| Size range | DN15 – DN20 – DN25 |
|---|---|
| Connection | Flanged, EN 1092-1 PN40 |
| Max. operating pressure (PMO) | 46 bar |
| Max. operating temperature (TMO) | 400 °C |
| Max. differential pressure (ΔPMX) | 32 bar |
| Max. allowable pressure (PMA) | 51 bar |
| Max. allowable temperature (TMA) | 400 °C |
| Back pressure | Max. 80% of the inlet pressure |
Materials
| Body | Forged steel C22.8 (ASTM A105) |
|---|---|
| Cover | Carbon steel |
| Strainer | AISI 304 |
| Disc | AISI 420 (hardened) |
| Seat | AISI 420 (hardened) |
How Does It Work?
Condensate lifts the disc and is discharged. When steam arrives, velocity under the disc increases, pressure drops and the steam trapped in the control chamber above presses the disc closed. When that steam condenses and the pressure falls, the cycle repeats.
Applications
- Irons and ironing presses
- Steam tracing lines
- Drying units
- Pressing units
- Steam-jacketed pipes
Key Features
- Hardened disc and seat
- Built-in, easy-to-clean strainer
- Replaceable internals
- Compact and light
Selection and Installation
When ordering, state the connection type, steam pressure, steam temperature, condensate load and back pressure. The flow direction is marked on the body.
Other connection type: Thermodynamic Steam Trap – Threaded.
See the product catalogue (PDF) for dimensions, weights and capacity charts. Prices and online orders: Unox Online.
For steam trap types and selection, read our steam trap types guide; see all models on our steam traps page.









