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Sterlco FT90-8-30IL In-Line Float & Thermostatic Trap 2″ NPT 30PSI

$ 1,359.00

Sterlco FT90-8-30IL In-Line Float & Thermostatic Trap offers stainless steel trim (standard), rated 30 psi maximum pressure, 2.0 inch NPT threaded ports and condensate flows of 1365 lbs with a .25 psid differential pressure (higher differential pressures will pass more flow see Specifications Sheet). Offers straight through piping connections that are unaffected by sudden or wide pressure changes. Valve responds quickly to condensate load changes giving a continuous discharge and large air handling capacity. Conforms to Federal Spec. WWT-696.

Specifications Sheet



The Sterlco FT90-8-30IL In-Line Float & Thermostatic Trap 2″ NPT 30 psig max working pressure is designed for all types of low pressure or vacuum steam heating systems and steam process equipment. Typical applications include: unit heaters, space heaters, water heaters, pressing machines, low pressure mains and risers, and replacement of inefficient inverted bucket traps. In-line float and thermostatic traps are especially well suited for apartments, hospitals, office buildings and schools or wherever quiet operation is necessary.

The opening and closing of the valve is caused by changes in the condensate level within the trap shell. When the water level drops, the weight of the float closes the valve. As condensate enters the traps, the float rises and opens the valve, allowing the condensate to be discharged. The float is designed to provide sufficient buoyancy to overcome the differential pressure across the valve. The internal float and valve configuration is such that the condensate level is always above the valve, creating a continuous water seal at the seat. Air and other gases are freely discharged as they reach the trap through the air vent. The calibrated thermostatic element will close the air vent immediately when the temperature surrounding the element reaches saturated steam temperature.

  • Head: Cast Iron, ASTM-A278B Class 30
  • Body: Cast Iron, ASTM-A278B Class 30
  • Bolting: Steel, Grade 5
  • Gaskets: Compressed Graphite
  • Float: Stainless Steel
  • Plug: Stainless Steel
  • Seat: Stainless Steel
  • Straight through piping connections
  • Unaffected by sudden or wide pressure changes
  • Responds quickly to condensate load changes
  • Continuous discharge
  • Function is not impaired by high back pressure
  • Energy efficient
  • Simple construction
  • On-line repair
  • Large air handling capacity
  • Conforms to Federal Spec. WWT-696

Additional information

Weight 47 lbs
Manufacturer Part Number


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