Working Principle Of Trap

The steam trap is installed between the steam heating equipment and the condensate backwater catchment. When opened, the barrel is at the bottom and the valve is fully open. After entering the trap, the condensate water flows to the bottom of the bucket, fills the valve body and submerges the bucket body.

Then, the condensate water is discharged to the backwater catchment through the fully opened valve. Steam also enters the trap from the bottom of the barrel body, occupying the top of the barrel body and generating buoyancy. The barrel rises slowly and moves the lever towards the seat until the valve is completely closed. Air and carbon dioxide gas gather at the top of the trap through the exhaust holes in the barrel body. Steam discharged from the vent will condense due to the heat dissipation of the trap. When the incoming condensate begins to fill the barrel, the barrel begins to exert a pull on the lever. As the condensation water level rises, the force generated increases until the differential pressure can be overcome and the valve can be opened. The trap valve opens and the differential pressure acting on the disc decreases. The barrel body will drop rapidly to make the valve fully open. The non-condensable gas accumulated on the top of the trap is discharged first, and then the condensate water is discharged. When water flows out of the barrel, it drives the dirt to flow out of the trap together. While condensate water is discharged, steam enters the trap again and a new cycle begins.