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Yarway ST600 Sanitary Thermostatic Steam Traps
The Yarway ST600 and ST800 steam traps for clean-n-place / steam-in-place condensate drainage with low subcooling requirements to minimize the risk of temperature alarms during SIP operation.
Yarway ST600 Sanitary Thermostatic Steam Traps


Maximum Operating Pressure (PMO)
100 psig (6.9 barg)
Maximum Operating Temperature (TMO)
338°F (170°C)
Maximum Allowable Pressure (PMA)
150 psig (10.3 barg)
Maximum Allowable Temperature (TMA)
366°F (186°C)
Mechanical Surface Finish (standard)
<20 µ in. Ra internal
<32 µ in. Ra external
Electropolish Surface Finish (optional)
13 µ in. Ra internal
20 µ in. Ra external
Gasket Approvals
USP Class VI
3A Sanitary Standard
Electropolish Finish; SLR Orifice; PTFE-Steel, PTFE, EPDM and other gasket materials available; Sensitive bellows for low subcool.


  • Steepest Interior Surfaces - Designed to completely drain without puddling, even in significantly sloped lines.
  • Stainless Steel Body - Body material is 316L Stainless Steel with 20 µ in. Ra internal and 32 µ in. Ra external. Electropolish option available.
  • Self-Centering Valve - Leak-tight shut off. Assembly of actuator and valve to impingement plate allows the valve to self align with center of the orifice.
  • Temperature-Sensitive Actuator - One moving part. 316L Stainless Steel, fail open, welded actuator for maximum corrosion, thermal and hydraulic shock resistance.
  • Directional Discharge - Erosion prevented by directing discharge to center of piping.
  • Maintenance - Can be easily removed and disassembled for sterilization or repair.
  • Industry Standard Food Grade Gasket - White Viton food grade gasket offers superior performance for higher pressure steam applications.
  • Large Orifice Selection (ST600) - Broad selection of orifice sizes provides greatest sizing and selection flexibility.
  • Superior Air Handling - Best air handling capability provides for fast startup.
  • Unique SLR Orifice Option - Provides drainage at saturated temperatures, instant reaction to load changes and guaranteed fail-open operation for extra critical operations.
  • Bar Stock - Connection fittings are not welded onto inlet and outlet pieces.
  • Universally Configurable (ST800) - Horizontal connections from any direction on standard model; HV and VH models feature one multi‑directional horizontal and one vertical connection.


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