Description HAD20B 1/2Inch Automatic Float Drain Valve for Compressed Air Systems 400L/M HAD20B compressed air condensate automatic drainage device is an aluminum die-cast housing Combined purely mechanical automatic drainage device, with built-in 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. Material: Aluminum+Plastic colour: As Shown Package Contents: 1 x Drain valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.