STI Air Supply and Control Kits are available complete with components to service one trailer. The kits are pre-assembled by STI as far as they can be prior to installation on the trailer. The air fittings and electrical connections are color coded to simplify installation and trouble shooting if necessary. Electrical connections are covered with heat shrink tubing to insure tight electrical connections and corrosion resistance.

Air Kits are normally shipped as five pre-assembled components:

• Compressor with control bracket assembly includes: 12VDC air compressor, bracket
  with circuit breaker and compressor relay switch, stainless steel dis-charge line and check valve.
• Control Panel includes: Air reservoir air pressure gauge, compressor “On – Off “ switch, manual fill valve, trailer raise and lower valve, reservoir pressure switch.
• Height Control Valve assembly includes: Suspension height control valves, air dump valves to control raising and lowering the trailer.
• Air Reservoir assembly includes: Air reservoir, manual drain valve and pressure protection valve.
• Air Line: 75” of ¼” black nylon tube.