Check the listing for details. Auto Automatic Timed Electronic Drain Valve For Air Compressor Water Tank 1/2''. Condition: New. Listed at 35.50 USD. Specification: Product Name: Timing Drain Valve Voltage: AC110V 50Hz Voltage Range: 10% Time Interval ( OFF ): 0.5--45 minutes (adjustable) Discharge Time ( ON ): 0.5--10 seconds (adjustable) Manual Test Button: Yes( micro switch) The Current Consumption: Max 4mA Shell Material: Flame retardant ABS plastic Electrical Connection: DIN43650A Indicator Lamp: LED indicating power ON / OFF Type: two-way direct-acting valve Flow Aperture: 5 mm Insulation Class: H In / Out Port Size: 1/2" Maximum Working Pressure: 1.6Mpa Maximum Temperature: 90 C Valve Material: Forging brass Installation: 1. Clean the compressed air system before installing 2. Attention to the direction of the arrow when the valve body; outlet do not use the impact of the hose does not impact.