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Steriflow Mark 94 Series High Flow Sanitary Steam Traps

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Express Delivery available, less than 1 week!

  • Express delivery available, less than one week! (1/2" & 3/4" models)
  • Fill fluid meets FDA/ICH Q3C/FDA Class 3 criteria designation
  • Body and solid internal components constructed of ASTM A479 316L
  • Polished components – body interior and exterior are mechanically polished to 20 Ra and 40Ra finish respectively.

Mark 94 series of high flow sanitary steam traps are thermostatic steam traps for use in high capacity steam systems where sanitary conditions must be maintained.

Body materials and finish

Featuring a 20 Ra finish on all internal wetted parts and 40 Ra on exterior parts.

Mark 94 is has a self-draining design (when installed vertically outlet side down) to minimize the possibility of medium entrapment and bacterial growth.

Typical uses

The Mark 94 has been designed to provide high condensate flow rates during SIP heat up, allowing vessels and other process equipment to reach validation temperature in minimum time. The proprietary fill, bellows and orifice design minimize the subcooling required to open the trap during SIP temperature hold, insuring fast drainage under lower load conditions to help insure against low temperature faults.

During SIP heat up, the bellows assembly is fully open to discharge all air, non-condensate gases and cool condensate. The heat of the entering steam causes the element to expand, closing the valve. As condensate accumulates in the body, the element cools, causing the bellows/stem tip to retract allowing condensate to flow.

Mark 94 can be used up to 3.5 bar inlet pressure and withstand temperatures up to 177 °c dependent on gasket selection.

Available options and sizes

Mark 94 series is available in DN20, DN25 or DN40 (3/4”, 1” or 1 ½”) sizes with standard sanitary Tri-Clamp process connections, optionally tube weld ends or DIN/ISO threaded connections may be fitted.

FDA, USP Class VI gaskets are fitted to the mark 94 series of sanitary steam trap as standard.

Mark 94 Series - Features and benefits

Mark 94 Series - Features and benefits

You can view the complete specs from our 'Data sheets and manuals' section.

Data sheets and manuals


Common process applications and industrial uses include:

  • Fermentors, bioreactors, sterilizers/autoclaves
  • Condensate drainage from large tube clean steam distribution loops
  • Condensate drainage from large scale process systems – fermenters, bioreactors, holding vessels, separators, chromatography vessels.


The Steriflow Mark 94 Series High Flow Sanitary Steam Traps is widely used in the following industries:

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