Quick Link and Quick Contact

Contact Info

Contact Info

Van Air Systems

Phone: 1-800-840-9906

2950 Mechanic Street
Lake City, PA 16423 USA



Quick Contact

Motorized Ball Valves

Whether you need the simplicity of a basic valve or the flexibility of added features, the MDV Series is your solution. Choose from two models, plus different options and accessories to fit the level of adjustment and controls you need.

For the most dependable draining, install the Van Air Systems MDV Series motorized ball valve. The MDV's heavy-duty ball valve can manage virtually any fluid in a wide variety of applications. Depend on it for nearly any fluid service.

For dependable draining at consistent intervals choose model MDV-400I. A power-on LED and test button are conveniently located on the top cover. To reset the valve, simply adjust the switches on the internal circuit board. Adjustable intervals between valve actuations are 30 minutes to 30 hours. Adjustable draining periods are 5, 10, 15 and 20 seconds.

If you prefer an easy-to-use keypad for convenient cycle timing adjustments and a handy LCD cycle status readout, choose model MDV-400L. You'll never wonder when it's set to actuate again with its continuous, clear countdown display of remaining cycle or drain open times. Added features include an external test and valve fault functions, both with LCD readout. Adjustable intervals between valve actuations are 1 minute to 99 hours 59 minutes. Adjustable draining periods are 1 second to 99 minutes 59 seconds.





Features and Benefits


  • 115 VAC, 230 VAC, 12 VDC, 24 VDC
  • 10' power cord
  • Two-piece brass ball valve
  • ½", ¾", or 1" NPT connection
  • Thermoplastic top cover
  • Epoxy powder-coated metal base
  • NEMA 4 enclosure
  • 0°F - 120°F ambient temperature range
  • Optional stainless steel valve (standard brass)
  • Optional alarm contact for remote indication of fault mode
  • Optional high/low liquid level sensor, flood level switch for zero air loss operation
  • Brass valves with NPT connection sizes: ½", ¾", 1", 1 ½", 2", 2 ½", 3"
  • Stainless steel valves with NPT connection sizes: ½", ¾", 1", 1 ½", 2"



  • Cooling towers
  • Process tanks
  • Separators
  • Compressed air filters
  • Compressed air receiver tanks
  • Compressed air dryers

File Downloads