purgeur à retour

CONT: Boiler Return Trap or Alternating Receiver. This type of trap is used to return condensate to a low pressure boiler. The boiler return trap does not hold steam as do other types, but is an adaptation of the lifting trap. It is used in conjunction with a boiler to prevent flooding return mains when excess pressure prevents condensate from returning to the boiler by gravity. The boiler trap collects condensate and equalizes the boiler and trap pressure, enabling the condensate in the trap to flow back to the boiler by gravity.