Combined purely mechanical automatic drainage device, with built-in HAD20B compressed air condensate automatic drainage device is an aluminum die-cast housing There is a stainless steel float drainage system. When drain pipe drains water, The buoyancy force is the weight of the drain float and the applied compressed air pressure When, close the drain pipe; when it rises to buoyancy and the automatic drain outlet opens; When the condensation water decreases, the water outlet of the drainage device closes again, This reciprocating cycle increases the amount of condensate discharge., Manufacturer: Akfldms