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P.C. Engineering Corporation
Spirax Sarco TD52M Thermodynamic Steam Trap - Stainless Steel, High Pressure

Overview

The Spirax Sarco TD52M is a maintainable thermodynamic steam trap constructed entirely from stainless steel. It is engineered for applications with relatively small condensate loads, particularly steam mains drainage in industrial plants.

The TD52M operates on the thermodynamic principle, using the difference in velocity between steam and condensate to open and close a single disc. This simple, robust mechanism ensures reliable condensate removal while minimizing steam loss. The all-stainless-steel construction provides excellent corrosion resistance and durability in demanding process environments.

For very low condensate loads, the TD52MLC (low capacity) variant is available. Where air venting is critical, anti-air-binding disc versions—TD52MA and TD52MLCA—are offered. An optional insulating cover protects the trap from ambient heat loss in exposed outdoor installations (not available for 1" size).

Key Features

  • Stainless steel construction – Body (AISI 420), cap (AISI 416), and disc (420 S45) for corrosion resistance
  • Thermodynamic operation – Simple, reliable disc mechanism with no moving parts to adjust
  • High pressure rating – Suitable for saturated steam service up to 42 bar g (609 psi g)
  • Wide temperature range – Operating temperatures up to 425 °C (797 °F)
  • Maintainable design – Field-serviceable with replaceable disc
  • Anti-air-binding option – TD52MA/TD52MLCA variants improve air release at start-up
  • Optional insulating cover – Reduces heat loss in cold or exposed environments
  • Compact size – Available from ¼" to 1" for flexible installation

Specifications

ParameterValue
Sizes¼", ⅜", ½", ¾", 1" (LC variant: ½" only)
Pipe ConnectionsScrewed BSP (ISO 7-1) or NPT
Body MaterialStainless Steel AISI 420
Cap MaterialStainless Steel AISI 416
Disc MaterialStainless Steel BS 1449 420 S45
Max. Allowable Pressure (PMA)63 bar g @ 120 °C (914 psi g @ 248 °F)
Max. Operating Pressure (PMO)42 bar g (609 psi g) for saturated steam
Max. Operating Temperature (TMO)425 °C (797 °F) – TD52M/MLC; 255 °C (491 °F) – TD52MA/MLCA
Min. Operating Temperature0 °C (32 °F)
Max. Operating Backpressure80% of upstream pressure
Min. Differential Pressure0.25 bar g (3.63 psi g) – TD52M/MLC
Design StandardEN 10204 3.1 certification available
ComplianceEuropean Pressure Equipment Directive 2014/68/EU
Weight (approx.)0.43 kg (⅜") to 1.40 kg (1")

Applications

- Steam mains drainage and drip leg applications - Process steam lines in chemical, pharmaceutical, and food processing plants - Textile and paper manufacturing steam systems - Power generation auxiliary steam lines - Any application requiring compact, high-pressure condensate removal with low steam loss

Frequently Asked Questions

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Contact PC Engineering for pricing, availability, and technical support for the Spirax Sarco TD52M Thermodynamic Steam Trap. Call us or fill in our inquiry form — our engineers will respond within 24 hours.

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Spirax Sarco TD52M Thermodynamic Steam Trap - Stainless