4700: 16-ounce In-Line Fertilizing Injection System for Sprinkler and Direct hose use


  • $64.99
    Unit price per 
Shipping calculated at checkout.

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The Chapin HydroFeed fertilizer injector is a patent-pending design filled with features for use with sprinklers and direct hose spray applications. Great way to conserve water and still have a lush, green, well-fed landscape or garden.


Different than a Hose-end Sprayer
HydroFeed works differently than a standard hose-end sprayer. A standard hose-end sprayer pulls the chemical up and out, emptying the tank. HydroFeed adds water back into the tank as your chemical is being pulled out. Because your chemical has a higher density than water, it sits on the bottom of the tank. Our outlet tube reaches the bottom of the tank so when clean water is being added to the tank, it stays on top of your chemical mix. You don’t have to worry about your chemical being diluted as it’s being fed through the outlet tube. This is why the tank turns clear after your chemical runs out.
    • 16-ounce clear tank
    • Funnel-shaped head for easy filling and monitoring usage
    • Ideal for liquid fertilizer
    • Adjustable connection elbow lets tank mount to any hose spigot
    • Large opening with O-ring for leak-free operation
    • Rigid inlet tube with filter for debris-free mixing
    • Drain plug with valve to quickly empty the tank after each use
    • Not compatible with drip irrigation systems

    Applications:  wettable powder fertilizers

    Documents & Support

    Chapin Warranty Information 
     Chapin HydroFeed product video

    Technical Specs

    Model Number 4700
    Tank Size .125-Gallon
    Tank Mouth Opening 3-Inches
    Tank Construction Poly
    Warranty 1 Year Limited
    Spray/Flow Rate (GPM) Based On Water Pressure Rated at 40PSI
    Filters In-Tank
    Shipping Weight In Pounds 1.9
    Item Weight In Pounds 1.4
    PSI - Operating Pressure Based On Water Pressure Rated at 40PSI
    Seal Material
    Package Dim. In. (LxWxH)
    10 X 4.4 X 16.2
    Item Dim. In. (LxWxH)
    8 x 4 x 14
    PSI - Operating Pressure
    Based On Water Pressure Rated at 40PSI

    Due to our ongoing product improvement process, product specifications may change without notice.