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40-gpm Fertilizer Injector

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Item # 221848

Add precise amounts of product directly into water lines

FOR FERTILIZERS AND MORE - Use it with fertilizer, insecticides, fungicides, algaecides, wetting agents, acids, disinfectants and more
ACCURATE - Consistently accurate and unaffected by variations in water flow and pressure
EASY TO USE - Easy to maintain and operate, with an easy-to-adjust ratio
HIGH TEMPERATURE RATING - Can be used in water with a maximum temperature of 104°F

This Dosatron 40-gpm, non-electric Fertilizer Injector mounts in water lines to inject preset amounts of product directly into the water supply for the perfect amount each time. It can be mounted on booms or benches, or used in conjunction with our portable 15-gal. Dosacart (Item # 192234) or 5-gal. Li'l Bud-D Dosacart (Item # 192235) for reliable, accurate fertigation on the go. 1-1/2" NPT fitting. Includes 6'L tubing, weighted strainer and mounting bracket.

Max Flow Rate

Flow Range

Pressure Range



Item No.

11 gpm

0.05 to 11 gpm

4.3 to 85 psi

1:100 Fixed



14 gpm

0.05 to 14 gpm

4.3 to 85 psi

1:500 to 1:50

0.2% to 2%


20 gpm

0.4 to 20 gpm

7 to 70 psi

1:500 to 1:66

0.2% to 1.5%


40 gpm

2.2 to 40 gpm

2 to 110 psi

1:500 tp 1:50

0.2% to 2%


100 gpm

5 to 100 gpm

2 to 120 psi

1:500 to 1:66

0.2% to 1.5%


NOTE: A 200-mesh filter (Item # 192232) should be installed on the inlet side of the injector and is required for a valid warranty.

2018 Reference Guide: Page 365

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