2-Way Magnetic AP-MT Asphalt Release Spray System

Model # 977899

The 2-Way Magnetic AP-MT Asphalt Release Spray System is a magnetic sensor activated asphalt release sprayer for diluting chemical concentrate "on-the-fly" using metering tips and for coating any length asphalt truck bed with asphalt release agent. When a truck comes into range of the magnetic sensor, the system activates and a delay timer allows the driver to position the truck under the spray nozzle before applying release agent. When the vehicle leaves the spraying area, or time expires, the system shuts down and resets. Switch between different concentrations or chemicals with ball valves at the control box.

Key Features

  • The driver remains in his cab and avoids the risk of slip-and-fall injury and chemical waste
  • Designed to spray asphalt release chemicals on to truck beds from a nozzle that attaches to an existing drive-through spray bar
  • Switch between 2 different concentrations or chemicals using ball valves at the control box
  • The rugged Sandpiper pump draws chemical concentrate and water from static tanks and blends them "on-the-fly"
  • Achieves a wide range of dilution ratios using a metering manifold
  • An adjustable timer delays spraying to allow the driver to position the truck
  • Evenly coats the truck bed in just seconds, reducing run-off and chemical waste
  • Spraying stops when the driver leaves the area or time expires
  • Chemical resistant wetted components ensure years of outstanding performance with minimal maintenance
  • See other Lafferty asphalt release equipment and industrial chemical applicators in Catalog 8


  • Lockable, stainless steel enclosure
  • Control box with delay/run timers and magnetic sensor
  • 2 chemical pickups with ball valves
  • Water float valve assembly for user supplied tank
  • 1/2" Sandpiper AODD Pump (Santoprene diaphragms)
  • Machined polypropylene metering manifold
  • 40' discharge hose with square spray nozzle
    Chemical Concentrate
    Static Tank of Water
    Compressed Air up to 10 CFM
    Minimum Air Supply Line 3/8"
    Hose 3/4" ID x 40'
    Nozzle 45WSQ
    Electric 120V
    Dilution Ratio Range 914:1 to 6:1 @ 60 PSI
    Heater Assembly
    Retro-Fit Heater Assembly# 720981
    Drum & Tote Stick Lengths, Styles & Seal Materials
    Drum Stick, 33" (Viton or EPDM)# 491643 / 491643-E
    Drum Stick, 48" (Viton or EPDM)# 491648 / 491648-E
    Drum Stick, 54" (Viton or EPDM)# 491645 / 491645-E
    Tote Stick, 33" (Viton or EPDM)# 491653 / 491653-E
    Tote Stick, 48" (Viton or EPDM)# 491654 / 491654-E
    Tote Stick, 54" (Viton or EPDM)# 491656 / 491656-E
    Lafferty Equipment Manufacturing, Inc.
    5614 Oak Grove Road
    North Little Rock, AR 72118
    TFN: 1-800-999-2820

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