Reduce Liquid Contaminants in your Workshop Compressor Tank by using #EDV-500 240 Volt Electronic Drain Valve. Connected to 240 Volt power the #EDV-500 maintains constant air pressure for your tools by keeping the Compressor air dry. Connect multiple Automatic Drain Valve #XD-30’s to drain multiple outlets simultaneously. Outer Body is made from Air Craft Quality Aluminium. Easily serviced, the #EDV-500 is an integral part of your Workshop Compressed Air System!