In a heater drain system, flashing fluids can cause erosion damage to control valves and associated piping.
This is due to the potential for condensate at the bottom of the heater being at saturation. When the condensate is drained to the condenser it loses pressure and flashes, which can lead to valve trim failure, piping damage and higher maintenance costs. Production inefficiencies also result from valve seat leakage and poor heat transfer in heaters.