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420 Gallon Diesel Powered - Trailer

Availability: In stock

$0.00
Contact us for more information or a quote on a diesel rig.

Call 877-833-4342 or text 253-833-4342

To request a quote for a gas or electric rig, visit Build-A-Rig.
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Additional Info

Motor Type Diesel

The 420 Diesel is a Favorite Among Busy Contractors Who Need to Keep Up With High Volume, Commercial Spraying


The 420 is our BIG DOG. This is the largest trailer mounted rig we make. If you are considering this rig you are probably a large operator spraying 5 or 6 days a week and need to keep up with the demand for your services.

The diesels are optionally equipped with our new cast pump housing which includes the Butterfly Valve, Max Seals and Star Drive connecting rod. You will no longer dread servicing your pump because of worries over a big mess. With a turn of the valve all of the mud in the tank is shut off and the rotor and stator can be removed without leaking material on to the ground.

The 1/4” box tubing frame is beefed up to 2”X 6”. The hitch size is 2-5/16” and is removable with bolts to easily adjust the height to match the tow vehicle.

Like the other Diesels the frame is extended to distribute the towing load better and provide working space or storage on the front tongue. The tank is recessed into the frame resulting in a lower profile making it easier to load dry or box mud into the tank.

Your new machine will have infinite control of mixing speed and pump speed at your finger tips. Mixing is a snap and adjusting your spray pattern will be easy.

Standard equipment and options for the AST 420 Diesel Texture Spray Machine are listed below: 

Standard Features

  • Trailer mounted
  • Single tank
  • 25HP diesel
  • Quincy QT 7.5 compressor
  • 125’ hose set
  • Pole gun
  • Air control pump switch
  • Stainless steel tank, lid, hinge and mixing paddles
  • Tube frame welded construction, to handle heavy loads
  • Electric brakes on all four wheels
  • Tandem independent suspension Torsion arm axles
  • 15” wheels and bearing buddies
  • AST special pole gun with hardened steel tips
  • 2L4 high performance pump
  • Stainless steel texture strainer
  • High performance material hose rated at 3200lb burst
  • Easy access oil filters

Feature Options

  • Electric pump switch
  • Binks gun
  • Longer hose set
  • Split tank
  • Butterfly valve pump
  • Option B - 16” tires, Quincy QT 15 (50 CFM), 33 HP Diesel

Engine/Compressor Options

Standard Quincy QT 7.5 (23 CFM) 25 HP Diesel
Option A Quincy QT 10 (35 CFM) 25 HP Diesel
Option B Quincy QT 10 (35 CFM) 33 HP Diesel
Option C Quincy QT 15 (50 CFM) 33 HP Diesel
Option D Quincy QT 15 (50 CFM) 50 HP Diesel

Quincy QT 7.5 (23 CFM) Quincy QT 10 (35 CFM) Quincy QT 15 (50 CFM)

Size and Weight Specifications

Tank Length Width Height Dry
Weight
420 184” 92” 68” 4260 lbs.

Figures are approximate and subject to change.