HAD20B compressed air condensate automatic drain device features an aluminum die-cast housing. It is a purely mechanical automatic drain device with a built-in stainless steel float drainage system. When water accumulates, the buoyancy lifts the float, causing the drain outlet to open automatically. As condensate level decreases, the float lowers and closes the drain port. This cycle repeats to ensure efficient condensate discharge. Material: Aluminum + Plastic Color: As shown Package Contents: 1 x Drain valve Note: Other items not included. Light reflection and display differences may cause slight color variations between image and actual product. Measurement error allowance: +/- 1-3 cm.