TD700S Thermodynamic Steam Trap

Brand: Watson McDaniel

TD700S model steam traps are fully in-line repairable and most commonly used in drip applications, such as draining condensate from steam mains and steam supply lines.

They can also be used for steam tracing applications. These traps are suitable for outdoor applications that are subject to freezing as well as superheated steam conditions.

They feature a “Quick-Replace” capsule that contains the trap’s complete internal working mechanism, which is easily replaced while the trap body remains in-line. All models contain an integral strainer for protection against dirt and scale.
  • "Quick-Replace" capsule design for easy in-line repair
  • Integral strainer with optional blowdown valve to protect trap from contamination
  • High pressure applications up to psig: 600 (kPa: 4,137, bar: 41.37)
  • Hardened stainless steel seat and disc for extended service life even at high pressure
  • Single trap will operate over the entire pressure range psig: 4 to 600 (kPa: 27.58 to 4,137, bar: 0.27 to 41.37)
  • Suitable for superheated steam
  • Freeze-proof when trap is piped in a vertical orientation for complete drainage of condensate
  • Non-integral seat and chrome-moly body allow for trap to be welded in-line
  • Trap will function in any orientation (horizontal preferred)


Enclosure, Body Material

  • Chrome-Moly Alloy Steel (ASTM A-217, GR WC9)

NPT Connection

  • 1” NPT Female
  • 1/2” NPT Female
  • 3/4” NPT Female

Welded Connection

  • 1” Socket Weld End Female
  • 1/2” Socket Weld End Female
  • 3/4” Socket Weld End Female

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