Production Introduction
Single valve, small volume, light weight, small exhaust flow. This product is used for the highest point of sewage pipeline or where is airclosed to exclude sewage pipe gas to clear the pipeline to make the pipeline in normal operation. If power off, pump stop, there will be négative pressure inside of pipeline, it may happen libation or break, now the exhaust valve and air suction valve will suck air speedy, keep the pipeline safety.