Industries
Animal Health
Car Wash
Data Centers & Mission-Critical Cooling
Food Safety & Sanitation
Irrigation
Hemp
Mining & Aggregates
Nutrient Delivery System
Water Treatment
Metal Processing
Printing
Products
D07
Hobby Cultivator
D128
D25
DM11 (Diaphragm)
D14
D6
D40
D20
D132
D400
Carts
Installation-Ready Systems
Venturi
Discontinued Products
Back to the product list

D40MZ2: Versatile Dosing Solution for All Applications

  • Connection Size: 1 1/2" NPT
  • Percentage Range: .2% to 2%
  • Unit Weight: 12 lbs
  • Flow: 2.2 to 40 GPM (8.32 to 151 LPM)
  • Pressure: 4.3 to 116 PSI
  • Dimensions: 25 1/4” x 8 1/2”
  • Ratio Range: 1:500 to 1:50

Included Accessories: Mounting bracket, suction hose, weighted strainer, and quick start guide.

The D40MZ2 is a versatile, high-flow dosing injector designed for applications that require accurate chemical injection and dependable performance across a wide range of operating conditions. Powered entirely by water flow, it delivers proportional dosing ratios from 1:500 to 1:50 (0.2% to 2%), automatically maintaining the selected concentration as water demand changes. This ensures consistent chemical delivery for applications such as water treatment, industrial processing, cleaning systems, agriculture, and other operations where dosing accuracy directly impacts results. With a flow capacity of 2.2 to 40 GPM, the D40MZ2 combines precision dosing with the ability to handle larger volumes, helping improve process consistency while reducing chemical waste and operating costs.

Pressure loss
pressure loss - D40MZ2 - HY.png

For optimal dosing performance, the D40MZ2 should be installed on a properly sized line with adequate upstream filtration to protect the injector from debris and maintain long-term reliability. Isolation valves are recommended to simplify maintenance and allow the unit to be serviced without shutting down the entire system. Positioning the chemical concentrate container close to the injector and minimizing suction lift helps ensure stable chemical pickup and accurate dosing. Where required, backflow prevention devices should be incorporated to protect both the water supply and chemical inventory. A well-designed installation helps maximize injector life, improve chemical efficiency, and ensure reliable operation across a broad range of commercial, agricultural, and industrial applications.

 

Every application is different. Flow rates, water quality, chemical compatibility, and installation requirements all impact the best injector configuration.

Contact a Dosatron expert today to determine the ideal setup for your application.

Find your maintenance kit in seconds — just check how long your pump has been in service.

 

Time in service

Recommended kit

Why

Buy Now

Under 6 months

Mini Maintenance Kit

Quick refresh of the wear parts that go first — keeps dosing accuracy on spec.

Click here

6 months – 2 years

Seal Kit

Replaces the seals and O-rings before leaks and dosing drift start.

Click here

Over 2 years

Rebuild Kit

A full internal overhaul — restores your pump to factory performance.

Click here

Over 5 years

Talk to our team

At this stage the motor piston typically needs replacing. We'll confirm the right solution for your unit.

 

Contact Us

 

Need a single replacement part instead of a full kit?

Contact our team with your model and application. We'll help you identify and source the exact component you need.

D40MZ2_specs.pdf

778 KB, PDF

EN_D40MZ2_Shematics_Linked.pdf

3.4 MB, PDF

d40mz2-ir-file-v1-3145.pdf

3.1 MB, PDF

D40MZ2 Quick Start Up

3.0 MB, PDF

PJDI120V Injection Seal Kit Instructions

645 KB, PDF

PJDI120VMINI-H Maintenance Kit Instructions

629 KB, PDF

D40MZ2 Rebuilt Kit Instructions

3.4 MB, PDF

D40 Piston Flang Kit Instructions

2.6 MB, PDF

Upgrading from D8R TO D8RE or D40MZ

318 KB, PDF

MKD40MZ2 Rebuild Kit

12 MB, PDF

MKD40MZ2 Rebuild Kit

12 MB, PDF

D40MZ SERIES SPOTLIGHT

Tom Talk – Dosatron Injector Mastery: Unleashing Precision with D40MZ Series

To load this content, approve your cookie preferences and allow the required cookies.

Reach out to us