Kussmaul 12V Auto Pump W/Auto Drain

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Your Price: $773.30
Part Number: KUSS091-9-12V-AD

The Auto Pump 12 Volt AD is an 091-9-12V Auto Pump with an Automatic Drain installed.  A normally open solenoid valve drains the moisture from the trap each time the compressor shuts down. The Auto Drain assures that the filter bowl is always drained and does this without intervention by maintenance personnel.

The 091-9-12V-AD is a small air compressor designed to mount on vehicles with air brakes to maintain the air pressure in the air brake system while the vehicle is not in use. A pressure switch senses when the system pressure drops and starts the compressor which then runs until pressure is restored. All ball bearing construction, lubricated for life, assures reliable operation and requires no servicing.

NOTE: This is not a stock item. Please allow 5-7 days for delivery.

For easier installation, use the E-Z Mount Plate


  • 100 PSI Max Rating, 12V, 11A
  • Vehicle mount compressor ensures truck air brake system is properly pressurized for immediate dispatch from station
  • Automatically purges water separator bowl every time compressor cycles via a 12V solenoid
  • Pressure switch regulated operation automatically senses low pressure in air system and restores proper pressure, preventing brake lock-up
  • No interference with engine mounted air compressor
  • Factory set PSI actuation points: 75 "On", 95 "Off" with Adjustment differential 20 PSI
  • Sealed ball bearings for long service life
  • Compact size
  • 1 year warranty


Input12 Vdc @ 11 Amps Max
Output .30 SCFM @ 80 PSI, .35 SCFM @ 60 PSI
Warranty1 Year
Weight6 Lbs
Motor TypePerm. Magnet .10 HP
Pressure SwitchAdjustable Set-Point Factory Set To 75 PSI Cut-In, 95 PSI Cut-Out

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