{"product_id":"check-valve-rola-chem-521170-injector-water-treatment-valve","title":"Check Valve | Rola-Chem | 521170 | Injector | Water Treatment Valve","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRola-Chem Injector Check Valve\u003c\/strong\u003e (521170) is designed to regulate chemical injection and prevent backflow in water-treatment setups. When your water test results reveal algae, cloudy water, metals, or scale, this valve enables precise dosing, protects pumps and lines, and helps maintain consistent treatment across your system.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePrevents backflow and back-siphon in injector lines, shielding pumps, meters, and fittings from contamination.\u003c\/li\u003e \u003cli\u003eEnables reliable inline dosing for targeted treatments against algae control, minerals, and metal contaminants.\u003c\/li\u003e \u003cli\u003eAddresses water-test–identified issues like algae, cloudy water, metals, and scale by ensuring safe, measured chemical delivery.\u003c\/li\u003e \u003cli\u003eDesigned for easy integration with standard injector hardware in a compact inline form factor, simplifying upgrades in tight spaces.\u003c\/li\u003e \u003cli\u003eIdeal for residential water systems and light commercial setups where precise chemical management matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAdd to your system today to safeguard your water quality.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Rola-chem","offers":[{"title":"Default Title","offer_id":48475806466291,"sku":"ROL521170","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0756\/7101\/1571\/files\/ROL521170_0.jpg?v=1771479879","url":"https:\/\/everklearpoolsupply.com\/products\/check-valve-rola-chem-521170-injector-water-treatment-valve","provider":"Ever-Klear Pool Supply","version":"1.0","type":"link"}