{"product_id":"dosatron-d128r-plunger","title":"Dosatron® D128R Plunger","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\u003cp\u003eA worn or cracked plunger in your Dosatron unit can bring your entire fertigation process to a grinding halt, resulting in uneven nutrient delivery or complete system shutdowns. When this occurs during the peak of the growing season or right before a major landscape installation deadline, every hour of downtime risks crop loss and turf yellowing. With global supply chains often causing unpredictable lead times for precision components, waiting for a failure to happen is a risk your business cannot afford. Keeping these essential repair parts in your service truck ensures you can restore operation immediately, maintaining your project schedule and keeping your clients' high value plants thriving through the summer heat.\u003c\/p\u003e\u003cp\u003eThe Dosatron D128R Plunger is engineered with a higher chemical resistance profile than generic alternatives, ensuring that your injection rates remain precise even when handling aggressive fertilizers and acid treatments. By utilizing genuine OEM parts, you reduce the frequency of maintenance intervals and prevent the premature wear of the inner cylinder walls. This investment in high quality components translates to significant labor savings, as your crews spend less time troubleshooting inconsistent flow rates and more time completing new installs. Staying well stocked with these plungers gives your company a professional competitive edge by providing reliable, uninterrupted service regardless of the water conditions.\u003c\/p\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh density chemical resistant polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Model\u003c\/td\u003e\n\u003ctd\u003eDosatron D128R Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFertigation and chemical injection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eService Life\u003c\/td\u003e\n\u003ctd\u003eStandard wear part\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eManufacturer original equipment (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\/Finish\u003c\/td\u003e\n\u003ctd\u003eFactory standard black or white\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eAvailable Models \u0026amp; Sizes\u003c\/h3\u003e\u003cp\u003eThis plunger is specifically designed for the Dosatron D128R unit; however, we carry a full inventory of replacement parts for the 14 GPM and 40 GPM series. Please contact our technical sales team for full configurations, bulk kit pricing, or compatibility questions regarding older injector models.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision molded geometry ensures a vacuum tight seal for consistent chemical dosing across varying flow rates.\u003c\/li\u003e\n\u003cli\u003eHeavy duty polymer construction resists swelling and degradation when exposed to concentrated fertilizers and acids.\u003c\/li\u003e\n\u003cli\u003eDirect OEM replacement design eliminates the need for modifications or specialized tools during the repair process.\u003c\/li\u003e\n\u003cli\u003eSmooth surface finish reduces internal friction, extending the life of the surrounding O-rings and seals.\u003c\/li\u003e\n\u003cli\u003eStandardized dimensions provide a perfect fit every time, preventing the bypass leaks common with third party parts.\u003c\/li\u003e\n\u003cli\u003eEngineered to maintain accuracy at the high pressures common in commercial irrigation and greenhouse headers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCommercial landscape irrigation\u003c\/li\u003e\n\u003cli\u003eAgricultural and crop irrigation\u003c\/li\u003e\n\u003cli\u003eGreenhouse and nursery operations\u003c\/li\u003e\n\u003cli\u003eSports turf and golf course maintenance\u003c\/li\u003e\n\u003cli\u003eMunicipal parks and public spaces\u003c\/li\u003e\n\u003cli\u003eChemical and fertigation delivery\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eBefore replacing the plunger, ensure the water supply is shut off and the internal pressure is fully bled from the injector body. Remove the lower housing carefully to access the piston assembly, then slide the old plunger off and replace it with the new unit while checking for any debris or mineral buildup in the chamber. It is highly recommended to lubricate the plunger seal with a manufacturer approved silicone based lubricant to ensure smooth movement and to maintain compliance with the Dosatron factory warranty.\u003c\/p\u003e","brand":"Dosatron","offers":[{"title":"Default Title","offer_id":52158386897185,"sku":"120684","price":16.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/8458\/3969\/files\/120684_PR.png?v=1766410125","url":"https:\/\/asiwsupply.com\/products\/dosatron-d128r-plunger","provider":"ASIW","version":"1.0","type":"link"}