G1/2 thread is widely used and suitable for most air compressors.Easy to install and fully automatic operation This is a reliable, high-quality condensate drain valve that keeps your compressed air handling equipment operating optimally. The timed electric drain valve can be set to discharge condensate water at regular intervals according to working conditions. The valve opening time is adjustable from 0.5 to 10 seconds, and the closing time is adjustable from 0.5 to 45 minutes. Automatic operation when draining condensate water to reduce waste of compressed air. Material: Brass+Plastic colour: black+gold 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.