MIL-DTL-82068D
3.7.2.3 Safety chains. Safety chains conforming to 49 CFR, section 393.70 (also referred
to as the Department of Transportation Federal Motor Carrier Safety Regulations), shall be
provided and installed for connection of the drawbar to the towing vehicle.
3.7.3 Pesticide storage tank, fittings, and agitator. The tank shall be constructed of
fiberglass or corrosion-resistant alloy steel. When a steel tank is provided, it shall be not less
than 0.1046-inch (U.S. revised standard gage No. 12) thickness. Exposure to pesticide for 100
hours shall not cause the tank coating to flake, peel, or blister, nor shall it cause uncoated internal
surfaces to show measurable corrosion, pitting, or deterioration. Fittings and attachments shall
be compatible with the tank material and shall be resistant to pesticides. The tank shall be
provided with a closeable air intake of sufficient diameter and elevation above the tank bottom to
prevent cavitation while draining at a flow rate as specified in table I. The tank bottom shall be
round or sloped to provide a sump effect, to provide for drainage without pockets or traps, and to
provide unrestricted pesticide circulation.
3.7.3.1 Filler opening. A filler opening, with a minimum area of 140 square inches with
no dimension less than 10 inches, and a quick-clamping lid, shall be provided. The lid shall
incorporate a non-corrodible, adjustable-tension locking device for a non-leaking fit.
3.7.3.2 Agitator. The tank shall be provided with an agitation system designed to
continuously maintain agitating currents over the entire volume of the tank bottom, effectively
mixing all layers of pesticide solution or suspension. This system may be accomplished by
means of:
a. Replaceable rotating paddles, propellers, or vanes.
b. Hydraulic agitation.
3.7.4 Engine. The pump shall be powered by an air-cooled, industrial gasoline engine of
a commercial design that has been proven satisfactory in extensive use, and for which repair parts
are readily obtainable. The rated horsepower and speed shall be in excess of that required to
meet the operational requirements of the sprayer. The engine furnished shall produce the
required sprayer performance using unleaded or low-lead content gasoline. The engine shall be
complete with the accessories normally furnished with the sprayer, including not less than the
following:
a. An engine hood (see 3.7.1).
b. A fuel tank with capacity for a minimum of 2 hours continuous operation at rated
speed.
c. A fuel filter located between the fuel tank and the carburetor.
d. A speed governing system, preset to maintain the manufacturer's recommended
continuous operation speed.
e. An air cleaner for the carburetor air inlet.
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