Support Documents

Find technical information to help you with your D20S!


For basic installation information click the menu above.


Review your Dosatron model selection options.


Check out the recommended accessories for your D20S.



Connection Size:2" NPT
Unit Weight:47 lbs
Dimensions:55" x 15" (with legs); 42" x 15" (without legs)
Flow:5 to 100 GPM (18.9 to 379 LPM)
Pressure:2 to 120 PSI
Ratio Range:1:500 to 1:50
Percentage Range:0.2 to 2%
Ounces Per Gallon Range:0.256 to 2.560
Included Accessories:Suction hose, weighted strainer, legs, and quick start guide.
Specification Sheet:Preview / Computer Download
Recommended Accessories:Click here for accessories


Dosatron model name definitions.

All options are not available for every model. Please CHAT or CALL 800-523-8499 to find the best seal for the chemical you are injecting.
  • V: Identifies the type of hose (stands for Viscous)
  • BP: Units with bypass options
  • P: Identifies the type of housing (stands for PVDF or Kynar®)
  • IE: Units with side injection option
  • WL: Certified by NSF to NSF/ANSI 61 Standards
  • D: Car wash units
  • HY: Hydroponic / Nutrient Delivery System units
  • AF/VF: Identifies the type of seals (AF = Aflas® or VF = Viton®)
  • K: Kalrez®
  • II: Identifies the region (North/Central Am. – Dosatron International, Inc.)


Need help finding the correct model for your application or just have a question? Feel free to give us a call. We are here to help you Monday through Friday from 8:30 am to 5:00 pm, Eastern Time.


Recommended installations for your D20S.

Installation illustrations are to be used as a reference guide only.


Recommended accessories for your D20S.

For installations on all water systems, you must conform to all state, local, and federal laws concerning the use of chemical injection devices for back flow prevention.
Required Filter Options

Filter-AKF5AP100-APart #: AKF5AP100-A
Filter – 200 Mesh/80 Micron, Y-type, 2″

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Part #: CV200
Check Valve – 2″

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WHA34-SSPart #: WHA200-SS-Kit
Water Hammer Arrestor Kit – controls effects of water hammer

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20PJ030MINI-H_D20SPart #: 20PJ030MINI-H
Mini Maintenance Kit

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CLEANSER_ALL_packetPart #: CLEANSER-ALL  (Packet)
Dosa-Klean – .187 lb (85 grams) packet

Is a water soluble concentrate that removes rust, mineral deposits, and calcifications with little or no scrubbing.

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CLEANSER_3LB_ALL_pailPart #: CLEANSER-3LB-ALL  (Economy Pail)
Dosa-Klean – 3 lb economy pail

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Designed to easily lubricate your static seals
and o-rings while you are changing the recommended maintenance parts.

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Part #: COM-100, PH-200, COM-80, PH-80
HM Digital Meters and Testers

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Check out our service, troubleshooting, and informational videos below.

D20S – 100 GPM Maintenance Video