{"product_id":"pentair-r172288-rainbow-feeder-check-valve-1-5-2","title":"Pentair R172288 Rainbow Feeder Check Valve | 1.5\" - 2\"","description":"\u003cp data-start=\"2032\" data-end=\"2700\"\u003eThe Pentair R172288 Rainbow Feeder Check Valve provides critical backflow protection for automatic chlorine and bromine feeder installations using one and one half inch or two inch plumbing. Positioned after the feeder, this valve helps block concentrated sanitizer water from flowing backward into pool equipment when circulation pressure drops. Manufactured to Pentair OEM specifications, the spring-loaded design opens during normal operation and closes securely when the system shuts down. Its chemical-resistant construction supports dependable performance in demanding pool environments and helps extend the service life of connected equipment.\u003c\/p\u003e\n\u003ch3 data-start=\"2702\" data-end=\"2720\"\u003e\u003cstrong data-start=\"2706\" data-end=\"2720\"\u003eHighlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2721\" data-end=\"3386\"\u003e\n\u003cli data-start=\"2721\" data-end=\"2851\"\u003e\n\u003cp data-start=\"2723\" data-end=\"2851\"\u003e\u003cstrong data-start=\"2723\" data-end=\"2751\"\u003eProtects Pool Equipment:\u003c\/strong\u003e Helps prevent chemical backflow that can damage heaters, pumps, and internal plumbing components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2852\" data-end=\"3001\"\u003e\n\u003cp data-start=\"2854\" data-end=\"3001\"\u003e\u003cstrong data-start=\"2854\" data-end=\"2886\"\u003eDual Plumbing Compatibility:\u003c\/strong\u003e Designed for use with both one and one half inch and two inch pipe sizes commonly found in feeder installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3002\" data-end=\"3115\"\u003e\n\u003cp data-start=\"3004\" data-end=\"3115\"\u003e\u003cstrong data-start=\"3004\" data-end=\"3032\"\u003eAutomatic Spring Action:\u003c\/strong\u003e Opens smoothly with normal water flow and seals tightly when pressure decreases.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3116\" data-end=\"3250\"\u003e\n\u003cp data-start=\"3118\" data-end=\"3250\"\u003e\u003cstrong data-start=\"3118\" data-end=\"3150\"\u003eBuilt for Chemical Exposure:\u003c\/strong\u003e Durable materials resist chlorine, bromine, and treated pool water over extended service periods.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3251\" data-end=\"3386\"\u003e\n\u003cp data-start=\"3253\" data-end=\"3386\"\u003e\u003cstrong data-start=\"3253\" data-end=\"3284\"\u003eRainbow Feeder Application:\u003c\/strong\u003e Commonly used with Pentair Rainbow automatic chlorinators and brominators to improve system safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003ePentair Rainbow Automatic Chlorine\/Bromine Chemical Feeder Models:\u003c\/strong\u003e 300, 302, 320, 322\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2745\" data-end=\"2764\"\u003eAdditional Info\u003c\/h3\u003e\n\u003cp data-start=\"2765\" data-end=\"3146\"\u003eThe Pentair R172288 Rainbow Feeder Check Valve protects pool equipment by preventing backflow of concentrated chemicals from Rainbow automatic feeders. This section supports Wholesale Pool Mart customers, including local service professionals, by addressing fitment, failure patterns, and efficient service planning. These FAQs focus on system protection and long-term reliability.\u003c\/p\u003e\n\u003ch2 data-start=\"3148\" data-end=\"3190\"\u003eCompatibility and System Verification\u003c\/h2\u003e\n\u003cp data-start=\"3191\" data-end=\"3261\"\u003eService professionals often confirm plumbing size before installation.\u003c\/p\u003e\n\u003ch4 data-start=\"3263\" data-end=\"3340\"\u003eIs the R172288 check valve compatible with standard feeder return lines?\u003c\/h4\u003e\n\u003cp data-start=\"3341\" data-end=\"3445\"\u003eYes, it is designed to work with both 1.5 inch and 2 inch pool plumbing commonly used on feeder returns.\u003c\/p\u003e\n\u003ch4 data-start=\"3447\" data-end=\"3504\"\u003eCan this valve be installed on systems with heaters?\u003c\/h4\u003e\n\u003cp data-start=\"3505\" data-end=\"3597\"\u003eYes, it is especially important on systems with heaters to prevent chemical backflow damage.\u003c\/p\u003e\n\u003ch4 data-start=\"3599\" data-end=\"3662\"\u003eDoes this valve replace older Rainbow check valve designs?\u003c\/h4\u003e\n\u003cp data-start=\"3663\" data-end=\"3753\"\u003eYes, it is commonly used when upgrading or replacing worn or sticking feeder check valves.\u003c\/p\u003e\n\u003ch2 data-start=\"3755\" data-end=\"3802\"\u003eField Performance and Equipment Protection\u003c\/h2\u003e\n\u003cp data-start=\"3803\" data-end=\"3851\"\u003eThese FAQs address real-world service scenarios.\u003c\/p\u003e\n\u003ch4 data-start=\"3853\" data-end=\"3900\"\u003eWhy do feeder check valves fail over time?\u003c\/h4\u003e\n\u003cp data-start=\"3901\" data-end=\"3979\"\u003eContinuous chemical exposure can weaken internal springs and sealing surfaces.\u003c\/p\u003e\n\u003ch4 data-start=\"3981\" data-end=\"4041\"\u003eDoes replacing the check valve help extend heater life?\u003c\/h4\u003e\n\u003cp data-start=\"4042\" data-end=\"4128\"\u003eYes, preventing chemical backflow significantly reduces corrosion risk inside heaters.\u003c\/p\u003e\n\u003ch4 data-start=\"4130\" data-end=\"4180\"\u003eWhat tests should be done after installation?\u003c\/h4\u003e\n\u003cp data-start=\"4181\" data-end=\"4284\"\u003eTechnicians typically verify proper flow direction and ensure the valve closes when the pump shuts off.\u003c\/p\u003e\n\u003ch2 data-start=\"4286\" data-end=\"4325\"\u003eLocal Pricing and Service Planning\u003c\/h2\u003e\n\u003cp data-start=\"4326\" data-end=\"4396\"\u003eWholesale Pool Mart customers often plan parts ahead of service calls.\u003c\/p\u003e\n\u003ch4 data-start=\"4398\" data-end=\"4466\"\u003eCan technicians check nearby shop stock before arriving onsite?\u003c\/h4\u003e\n\u003cp data-start=\"4467\" data-end=\"4537\"\u003eYes, checking nearby shop stock helps keep service schedules on track.\u003c\/p\u003e\n\u003ch4 data-start=\"4539\" data-end=\"4595\"\u003eDo service teams usually carry feeder check valves?\u003c\/h4\u003e\n\u003cp data-start=\"4596\" data-end=\"4669\"\u003eYes, they are common service items due to frequent chemical-related wear.\u003c\/p\u003e\n\u003ch4 data-start=\"4671\" data-end=\"4730\"\u003eAre additional plumbing parts often replaced together?\u003c\/h4\u003e\n\u003cp data-start=\"4731\" data-end=\"4820\"\u003eYes, unions, fittings, and feeder tubing are commonly refreshed during valve replacement.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":54592827556131,"sku":"R172288","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0914\/0987\/5235\/files\/PentairR172288RainbowFeederCheckValve1.5-2WholesalePoolMart_4.jpg?v=1769802734","url":"https:\/\/wholesalepoolmart.com\/products\/pentair-r172288-rainbow-feeder-check-valve-1-5-2","provider":"Wholesale Pool Mart","version":"1.0","type":"link"}