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Back Pressure and Steam Trap Capacity
Back pressure in a condensate systems will reduce the steam trap capacity
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The steam trap capacity are reduced if there is a back pressure in the condensate system. A back pressure is often a result of excessive flash steam generation.
The reduction in steam trap capacity is indicated in the table below.
| Reduction in Steam Trap Capacity (%) | ||||
| Inlet Pressure | % Back Pressure | |||
| 25 | 50 | 75 | ||
| (psig) | (bar) | |||
| 5 | 0.35 | 6 | 20 | 38 |
| 25 | 1.75 | 3 | 12 | 30 |
| 100 | 6.9 | 0 | 6 | 25 |
| 200 | 13.8 | 0 | 5 | 23 |
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Related Topics
- Control Valves and Equipment - Sizing and dimensions of control valves & equipment in steam and condensate systems
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Related Documents
- Design of Steam Heating Systems - An introduction to the basic design of steam heating systems
- Flash Steam Generation in Imperial Units (psig) - When condensate leaves the steam traps - flash steam is generated. This table indicates the amount of flash steam generated at different pressures - psig
- Properties of Saturated Steam - SI Units - A Saturated Steam Table with steam properties as specific volume, density, specific enthalpy and specific entropy
- Steam Trap Safety Factor - Selection of steam traps and safety factors
- Steam Trap Selection Guide - A steam trap selection guide - Float & Thermostatic, Inverted Bucket, Bimetal Thermostatic, Impulse and Thermodynamic Disc steam traps
