{"product_id":"dosatron-d40-injectors-40-gpm-hort","title":"Dosatron - D40 Injectors - 40 GPM (1-1\/2 in) (HORT)","description":"\u003cp\u003eThe Dosatron D40 series is a high-flow water-powered proportional injector rated for 40 GPM on 1-1\/2 in lines. It runs on water pressure alone, maintaining proportional accuracy regardless of pressure or flow variation, with no electricity and no batch tanks.\u003c\/p\u003e\u003cp\u003eThe D40 is built for whole-room and multi-zone fertigation where a single injector feeds a large manifold. With a 2.2 to 40 GPM flow range and pressure tolerance to 116 psi, it serves commercial cultivation facilities, nurseries, irrigation mains, and industrial dosing.\u003c\/p\u003e\u003ch3\u003eAvailable Options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e0.2-2% (1:500-1:50) 1-1\/2 in Viton (FKM) Seals - No Bypass [D40MZ2VFII]\u003c\/li\u003e\n\u003cli\u003e0.2-2% (1:500-1:50) 1-1\/2 in Viton (FKM) Seals - Bypass [D40MZ2BPVFII]\u003c\/li\u003e\n\u003cli\u003e0.2-2% (1:500-1:50) 1-1\/2 in Kalrez (FFKM) Seals - No Bypass [D40MZ2VFKII]\u003c\/li\u003e\n\u003cli\u003e0.2-2% (1:500-1:50) 1-1\/2 in Kalrez (FFKM) Seals - Bypass [D40MZ2BPVFKII]\u003c\/li\u003e\n\u003cli\u003e1-5% (1:100-1:20) 1-1\/2 in Viton (FKM) Seals - No Bypass [D40MZ5VFII]\u003c\/li\u003e\n\u003cli\u003e0.03-0.2% (1:3000-1:500) 1-1\/2 in Viton (FKM) Seals - No Bypass [D40MZ3000VFII]\u003c\/li\u003e\n\u003cli\u003e0.03-0.2% (1:3000-1:500) 1-1\/2 in Viton (FKM) Seals - Bypass [D40MZ3000BPVFII]\u003c\/li\u003e\n\u003cli\u003e0.03-0.2% (1:3000-1:500) 1-1\/2 in Kalrez (FFKM) Seals - No Bypass [D40MZ3000VFKII]\u003c\/li\u003e\n\u003cli\u003e0.03-0.2% (1:3000-1:500) 1-1\/2 in Kalrez (FFKM) Seals - Bypass [D40MZ3000BPVFKII]\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFlow range: 2.2 to 40 GPM\u003c\/li\u003e\n\u003cli\u003eOperating pressure: 4.3 to 116 psi\u003c\/li\u003e\n\u003cli\u003eConnection: 1-1\/2 in NPT\u003c\/li\u003e\n\u003cli\u003eDilution ranges: 0.03-0.2%, 0.2-2%, 1-5%\u003c\/li\u003e\n\u003cli\u003eSeal materials: Kalrez (FFKM), Viton (FKM)\u003c\/li\u003e\n\u003cli\u003eDimensions: 25-1\/4 in x 8-1\/2 in; weight 12 lbs\u003c\/li\u003e\n\u003cli\u003eDose scale: percentage and ratio (HORT); union not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWater-powered proportional dosing, no electricity required\u003c\/li\u003e\n\u003cli\u003eDosing accuracy holds through supply pressure and flow variation\u003c\/li\u003e\n\u003cli\u003eExternally adjustable injection rate, no tools needed\u003c\/li\u003e\n\u003cli\u003eBypass fitted on selected models for clear-water flushing\u003c\/li\u003e\n\u003cli\u003eField-serviceable; seal and rebuild kits available\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHORT vs Hydro Versions\u003c\/h3\u003e\u003cp\u003eThis listing covers the HORT (horticulture) build. Compared to the Hydro (HY) build of the same injector, the dose setting is marked in percentage and ratio rather than ml\/gal, and no union is included. Bypass is not standard on HORT units - only the models marked Bypass in the option list ship with one; for the rest, plumb an external bypass loop if you need to flush clear water without pulling the unit.\u003c\/p\u003e\u003ch3\u003eChoosing Your Model\u003c\/h3\u003e\u003cp\u003eModels differ by dilution range, seal material, and whether a bypass is fitted. The dilution range (percentage and ratio) sets how much concentrate is injected per unit 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.\u003c\/p\u003e\u003ch3\u003eSeal Selection\u003c\/h3\u003e\u003cp\u003eAfter 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.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eViton (FKM)\u003c\/strong\u003e - the general-purpose default. Suited to soluble fertilizers, micronutrients, pH-down acids, wetting agents, and most neutral to mildly acidic feeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAflas\u003c\/strong\u003e - for alkaline chemistry. Specify for pH-up, potassium hydroxide, liquid lime, carbonates, and hypochlorite sanitizers, which swell and harden Viton over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKalrez (FFKM)\u003c\/strong\u003e - 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.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf 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.\u003c\/p\u003e\u003ch3\u003eService and Maintenance\u003c\/h3\u003e\u003cp\u003eThese 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.\u003c\/p\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWhole-room and multi-zone commercial fertigation\u003c\/li\u003e\n\u003cli\u003eNursery and field irrigation mains\u003c\/li\u003e\n\u003cli\u003eLarge controlled-environment facilities\u003c\/li\u003e\n\u003cli\u003eIndustrial chemical dosing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dosatron","offers":[{"title":"0.2-2% (1:500-1:50) 1-1\/2 in Viton (FKM) Seals - No Bypass [D40MZ2VFII]","offer_id":52797952819511,"sku":"D40MZ2VFII","price":1399.74,"currency_code":"USD","in_stock":true},{"title":"0.2-2% (1:500-1:50) 1-1\/2 in Viton (FKM) Seals - Bypass [D40MZ2BPVFII]","offer_id":52797952852279,"sku":"D40MZ2BPVFII","price":1450.42,"currency_code":"USD","in_stock":true},{"title":"0.2-2% (1:500-1:50) 1-1\/2 in Kalrez (FFKM) Seals - No Bypass [D40MZ2VFKII]","offer_id":52797952885047,"sku":"D40MZ2VFKII","price":1706.53,"currency_code":"USD","in_stock":true},{"title":"0.2-2% (1:500-1:50) 1-1\/2 in Kalrez (FFKM) Seals - Bypass [D40MZ2BPVFKII]","offer_id":52797952917815,"sku":"D40MZ2BPVFKII","price":1759.95,"currency_code":"USD","in_stock":true},{"title":"1-5% (1:100-1:20) 1-1\/2 in Viton (FKM) Seals - No Bypass [D40MZ5VFII]","offer_id":52797952950583,"sku":"D40MZ5VFII","price":1754.47,"currency_code":"USD","in_stock":true},{"title":"0.03-0.2% (1:3000-1:500) 1-1\/2 in Viton (FKM) Seals - No Bypass [D40MZ3000VFII]","offer_id":52797952983351,"sku":"D40MZ3000VFII","price":2120.15,"currency_code":"USD","in_stock":true},{"title":"0.03-0.2% (1:3000-1:500) 1-1\/2 in Viton (FKM) Seals - Bypass [D40MZ3000BPVFII]","offer_id":52797953016119,"sku":"D40MZ3000BPVFII","price":2173.57,"currency_code":"USD","in_stock":true},{"title":"0.03-0.2% (1:3000-1:500) 1-1\/2 in Kalrez (FFKM) Seals - No Bypass [D40MZ3000VFKII]","offer_id":52797953048887,"sku":"D40MZ3000VFKII","price":2321.47,"currency_code":"USD","in_stock":true},{"title":"0.03-0.2% (1:3000-1:500) 1-1\/2 in Kalrez (FFKM) Seals - Bypass [D40MZ3000BPVFKII]","offer_id":52797953081655,"sku":"D40MZ3000BPVFKII","price":2383.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/0341\/5863\/files\/d40mz2-ir-image-v1-3134.jpg?v=1786063859","url":"https:\/\/www.blacklabelsupply.io\/products\/dosatron-d40-injectors-40-gpm-hort","provider":"BLACK LABEL","version":"1.0","type":"link"}