Blodgett KTT-DS Series - Manual (Page 12)

10 OM-KTT-DS
Sequence of Operation
The following “action-reaction” outline is provided to help the user understand the
function of the equipment.
When the steam inlet valve is opened, steam flows into the jacket at a pressure
determined by the boiler system or by the pressure reducing valve that serves the
kettle.
In the jacket, steam transfers heat to the kettle as it condenses into water. The steam
trap allows condensate (water) to leave the jacket, while it holds steam in. When the
steam is shut off, condensation produces a vacuum in the jacket, but the check valve
in the condensate return line keeps water from flowing back into the jacket.