SteamEraa India Private Limited is an Indian manufacturing company specializing in steam engineering products, industrial valves, and innovative solutions for efficient steam management.

Contact Info
Location

Pune, Maharashtra, India

STT41 TD Traps

STT41 Thermodynamic Steam Trap

The STT41 Thermodynamic Steam Trap is designed to automatically discharge condensate & air from steam systems while minimising the loss of live steam. It operates on the thermodynamic principle, using the pressure & velocity differences between condensate & flash steam to control the opening and closing of a disc. The compact, robust construction features a replaceable seat & disc to support maintenance & extend serviceability. An insulation cover is intended to help reduce heat loss & improve steam-holding performance under suitable operating conditions.

Technical Specifications

Parameter Specification
Product Name Thermodynamic Steam Trap
Model STT41
Nominal Sizes 15NB, 20NB & 25NB
Body Material ASTM A351 Gr. CF8
Operating Principle Thermodynamic Disc Mechanism
Construction Compact, Robust
Nominal Pressure Designation 600#
End Connections BSP, BSPT, NPT, Socket-weld, Flanged 150#, 300# & 600# (Weld On)
Seat Construction Replaceable Seat & Disc
Internal Disc & Seat Materials Hardened AISI 420
Strainer Screen AISI 304
Insulation Cover All-weather Insulation Cover

Key Features

  • img Thermodynamic Disc Operation: Uses pressure and velocity changes during the steam-condensate cycle to provide automatic condensate discharge and steam shut-off.
  • img Replaceable Seat & Disc: Supports maintenance of the primary working components without automatically requiring replacement of the complete trap; service procedure to be confirmed.
  • img Compact Construction: Enables installation in steam distribution and condensate drainage lines where space is limited.
  • img Robust Stainless Steel Body: ASTM A351 CF8 body construction provides corrosion resistance appropriate to compatible industrial steam service.
  • img Extended Steam-Holding Time: Designed to help reduce unnecessary cycling and live steam loss when correctly sized and operated within the approved pressure range.
  • img Insulation Cover for Outdoor Service: Helps reduce the influence of wind, rain and ambient heat loss on trap operation, subject to the final cover design.

Design & Operating Conditions

Parameter Specification
PMA (Maximum Allowable Pressure) 48 bar(g) @ 38°C
TMA (Maximum Allowable Temperature) 538°C
PMO (Maximum Operating Pressure) 42 bar(g)
Minimum Differential Pressure for Reliable Operation 0.25 bar
Cold Hydro Test Pressure 72 bar(g) @ RT
Outlet Back Pressure Must remain below 80% of the inlet pressure.

Applications

The STT41 Thermodynamic Steam Trap is intended for consideration in the following industrial steam applications.

  • img Steam Distribution Mains: Removal of accumulated condensate from steam headers and distribution pipelines.
  • img Steam Main Drip Legs: Drainage of condensate from low points and designated drainage points in steam lines.
  • img Steam Tracing Systems: Condensate removal from suitable steam tracing circuits.
  • img Utility Steam Systems: Condensate management in industrial steam networks.
  • img Outdoor Steam Installations: Suitable applications where the specified all-weather insulation cover is appropriate for the site conditions.
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