Dosatron - D6 MidFlo Injectors - 26 GPM (1-1/4 in) (HYDRO)

Brand: Dosatron

The Dosatron D6 MidFlo series is a water-powered proportional injector rated for 26 GPM on 1-1/4 in lines. It runs on line pressure alone with a polypropylene housing and a serviceable internal motor sleeve, drawing and blending concentrate in direct proportion to the water passing through.

The D6 covers the gap between bench-level and head-of-system injection, letting one pump feed several lines at higher volume than a 3/4 in unit. It suits multi-zone greenhouse manifolds, commercial nurseries, boom sprayers, and industrial water treatment.

Available Options

• 0.1-1% (1:1000-1:100) 3.75-37.5 mL/gal 1-1/4 in Viton (FKM) Seals [D6MZ1000BPVFHY]
• 0.1-1% (1:1000-1:100) 3.75-37.5 mL/gal 1-1/4 in High-Temp Aflas Seals [D6MZ1000BPHTAFHY]
• 0.1-1% (1:1000-1:100) 3.75-37.5 mL/gal 1-1/4 in Kalrez (FFKM) Seals [D6MZ1000BPVFKHY]
• 0.03-0.3% (1:3000-1:333) 1.25-11 mL/gal 1-1/4 in Viton (FKM) Seals [D6MZ3000BPVFHY]
• 0.03-0.3% (1:3000-1:333) 1.25-11 mL/gal 1-1/4 in Aflas Seals [D6MZ3000BPAFHY]
• 0.03-0.3% (1:3000-1:333) 1.25-11 mL/gal 1-1/4 in Kalrez (FFKM) Seals [D6MZ3000BPVFKHY]
• 0.2-2% (1:500-1:50) 7.5-75 mL/gal 1-1/4 in Viton (FKM) Seals [D6MZ2BPVFHY]
• 0.2-2% (1:500-1:50) 7.5-75 mL/gal 1-1/4 in High-Temp Aflas Seals [D6MZ2BPHTAFHY]
• 0.2-2% (1:500-1:50) 7.5-75 mL/gal 1-1/4 in Kalrez (FFKM) Seals [D6MZ2BPVFHYK]

Specifications

• Flow range: 0.44 to 26 GPM
• Operating pressure: 4.3 to 116 psi
• Connection: 1-1/4 in NPT
• Dilution ranges: 0.03-0.3% (1:3000-1:333), 0.1-1% (1:1000-1:100), 0.2-2% (1:500-1:50)
• Seal materials: Aflas, High-Temp Aflas, Kalrez (FFKM), Viton (FKM)
• Dimensions: 24 in x 9 in x 8 in; weight 9 lbs
• Dose scale: mL/gal, percentage and ratio (HY); bypass and union included

Key Features

• Water-powered proportional dosing, no electricity required
• Dosing accuracy holds through supply pressure and flow variation
• Externally adjustable injection rate, no tools needed
• Integrated bypass fitted as standard on every model
• Union included for series installation in a nutrient delivery system
• Field-serviceable; seal and rebuild kits available

Hydro vs HORT Versions

This listing covers the Hydro (HY) build, set up for recirculating and injected nutrient programs. Compared to the HORT (horticulture) build of the same injector, the dose scale is marked in mL/gal alongside percentage and ratio, an integrated bypass is fitted as standard so you can switch nutrients on and off without shutting down flow, and a union is included so the unit can be installed in series as part of a nutrient delivery system.

Choosing Your Model

Models differ by dilution range and seal material. The dilution range - shown in mL/gal, percent, and ratio - sets how much concentrate is injected per gallon of water: pick the range your feed recipe sits in the middle of, not at the edge of, so you keep adjustment headroom in both directions. Seal material is matched to your chemistry, covered below.

Seal Selection

After dilution range, seal material is the most important choice you make. The seal is the only part of the injector in constant contact with undiluted concentrate, and running the wrong elastomer is the single most common cause of early injector failure.

• Viton (FKM) - the general-purpose default. Suited to soluble fertilizers, micronutrients, pH-down acids, wetting agents, and most neutral to mildly acidic feeds.
• Aflas - for alkaline chemistry. Specify for pH-up, potassium hydroxide, liquid lime, carbonates, and hypochlorite sanitizers, which swell and harden Viton over time.
• Kalrez (FFKM) - the broadest chemical resistance available. Specify for peracetic acid (PAA), hydrogen peroxide blends, chlorine dioxide, and strong oxidizers such as ZeroTol and SaniDate, or where one unit has to run mixed chemistries.

If a single injector will see more than one chemistry, specify to the most aggressive of them. Replacement seal kits and full rebuild kits are stocked for every model listed here.

Service and Maintenance

These injectors are field-serviceable and designed to be rebuilt rather than replaced. Routine service is a seal kit; a full rebuild kit restores the motor and piston assembly. Install a strainer ahead of the unit and flush after dosing aggressive chemistry to get full service life.

Ideal Applications

• Medium-flow greenhouse fertigation
• Multi-line irrigation zones
• Commercial nursery irrigation
• Alkaline and peracetic-acid dosing (Aflas / Kalrez)