Dosatron D40MZ3000 HiFlo Doser, 40 GPM, 1:3000 to 1:500, 1 1/2 in NDS Unit

Dosatron HiFlo System D40MZ3000, 40 GPM

Concentrated stock tanks and strong additives call for very small, very accurate doses, and this injector works at the low end of the scale. The D40MZ3000 sets a dilution ratio from 1:3000 to 1:500. That equals 0.03 to 0.2 percent, or roughly 1.25 to 7.5 mL of concentrate per gallon. In teaspoons, the range runs from about a quarter teaspoon to one and a half per gallon. Water pressure alone drives the metal-free piston, so the unit needs no power supply. Every stroke draws concentrate in proportion to the water passing through, even as flow changes. It handles 2.2 to 40 gallons per minute at operating pressures from 4.3 to 116 psi. Connections are 1 1/2 inch NPT, sized for the HiFlo side of a Nutrient Delivery System. The VF in the part number stands for Viton seals, chosen for acidic chemistries. BP marks the integrated bypass, which switches injection on or off without replumbing. The blue polypropylene body measures 25 1/4 by 8 1/2 inches. Units can be plumbed in parallel when total flow needs to exceed 40 GPM.

Installing a Dosatron Nutrient Delivery System Unit

Each concentrate in the program gets its own injector, plumbed in series along the main line. Mount the unit to a wall or frame with the included bracket. Fit a 200 mesh filter ahead of the doser to keep grit away from the piston. Dosatron also recommends a check valve on the line. Drop the 6 foot clear suction tube into the stock container with the weighted strainer near the bottom. Open the supply slowly the first time so air clears from the body. Set the dose by turning the adjustment sleeve to the target ratio and lock it. Verify the setting by measuring how much concentrate the unit draws over a set volume of water. Keep the water at or below 104°F. Flip the bypass to run clear water when flushing lines or changing stock. The mini-maintenance kit handles routine service, and the injection seal kit covers the yearly rebuild. Follow local backflow rules before tying into a potable supply.

Key Features

• 1:3000 to 1:500: About 1.25 to 7.5 mL per gallon.
• 2.2 to 40 GPM: Wide flow window for large zones.
• Water Powered: No electricity, proportional at any flow.
• Viton Seals: Chosen for acidic chemistries.
• Integrated Bypass: Switch injection on or off in seconds.

Technical Specifications