{"id":5653,"date":"2025-07-03T09:00:00","date_gmt":"2025-07-03T14:00:00","guid":{"rendered":"https:\/\/www.oxidationtech.com\/blog\/?p=5653"},"modified":"2025-06-30T08:37:46","modified_gmt":"2025-06-30T13:37:46","slug":"cm5-3-ozone-injection-pump-reliable-ozone-resistant-performance-for-water-treatment","status":"publish","type":"post","link":"https:\/\/www.oxidationtech.com\/blog\/cm5-3-ozone-injection-pump-reliable-ozone-resistant-performance-for-water-treatment\/","title":{"rendered":"CM5-3 Ozone Injection Pump \u2013 Reliable, Ozone-Resistant Performance for Water Treatment"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The <strong>CM5-3 Pump<\/strong> from Grundfos is a powerful and ozone-compatible centrifugal pump designed specifically for <strong>ozone water systems<\/strong>. Whether you&#8217;re injecting ozone into water with a venturi injector or circulating ozonated water through your system, the CM5-3 delivers reliable, efficient performance backed by a robust design built to withstand the unique demands of ozone treatment.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Overview: CM5-3 Key Features<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>1.4 HP Stainless Steel Pump<\/strong><\/li>\n\n\n\n<li><strong>Flows up to 20 GPM at 51 PSI<\/strong><\/li>\n\n\n\n<li><strong>Dual Voltage Operation (120 VAC \/ 220 VAC)<\/strong><\/li>\n\n\n\n<li><strong>All Ozone-Compatible Wetted Parts<\/strong><\/li>\n\n\n\n<li><strong>Pump Head Rotation for Flexible Installation<\/strong><\/li>\n\n\n\n<li><strong>Easy Maintenance with Rebuild Kits Available<\/strong><\/li>\n\n\n\n<li><strong>Excellent Seal Life Even in High Ozone Conditions<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Engineered for Ozone Water Applications<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Unlike standard pumps, the CM5-3 is specifically designed to withstand the oxidative stress of ozone-rich environments. With <strong>stainless steel components<\/strong>, <strong>Viton seals<\/strong>, and other <strong>ozone-resistant materials<\/strong>, this pump is a reliable choice for long-term use in high-ozone systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Its centrifugal design provides the consistent flow and pressure necessary for effective ozone mixing, especially when used with a <strong>venturi injector<\/strong> like our <strong>Model 784<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Versatile Performance with Model 784 Venturi<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For optimal ozone dissolution into water, we recommend pairing the CM5-3 with the <strong>Model 784 Venturi Injector<\/strong>. In this configuration, the system typically operates at <strong>10 GPM<\/strong>, creating ideal conditions for ozone gas transfer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This setup makes the CM5-3 perfect for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ozone recirculation loops<\/strong><\/li>\n\n\n\n<li><strong>Ozone injection under city water pressure<\/strong><\/li>\n\n\n\n<li><strong>Compact ozone water treatment skids<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Smart, Flexible Design<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The CM5-3 features a <strong>top-mounted water discharge port<\/strong> that can be easily rotated by loosening four bolts on the pump head. This allows for <strong>quick orientation adjustments<\/strong> without full disassembly\u2014ideal for tight spaces and custom layouts.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With <strong>dual voltage capability<\/strong>, the pump can run on either <strong>120 VAC or 220 VAC<\/strong>, making installation simple and flexible across various system designs.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Proven Durability and Serviceability<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In our experience, the CM5-3 pump offers <strong>exceptional longevity<\/strong>, especially when exposed to high ozone concentrations. It replaced the older Grundfos <strong>CHI series<\/strong>, and since then, has proven far superior in both <strong>ozone resistance<\/strong> and <strong>overall reliability<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If maintenance is ever required, <strong>rebuild kits are available<\/strong>, and the pump is designed to be <strong>easy to service<\/strong> with accessible components and straightforward repair procedures.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Pump Curve &amp; Performance<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pump output will vary depending on system pressure and inlet conditions. At <strong>0 PSI inlet pressure<\/strong>, the CM5-3 can reach a <strong>maximum pressure of 57 PSI<\/strong>. Depending on the application, water flow rates of <strong>up to 30 GPM<\/strong> are possible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For a detailed view of flow vs. pressure, refer to the <strong>CM5 series pump performance curve<\/strong>. Need help choosing the right model for your setup? Our application engineers are happy to assist.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Why Choose the CM5-3?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Built for ozone: corrosion-resistant, durable, and proven<\/li>\n\n\n\n<li>Ideal for venturi-based ozone injection systems<\/li>\n\n\n\n<li>Flexible voltage and discharge configurations<\/li>\n\n\n\n<li>Dependable, quiet, and low-maintenance operation<\/li>\n\n\n\n<li>Supported by expert technical assistance and rebuild kits<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you&#8217;re building or upgrading an <strong>ozone water system<\/strong>, the <strong>CM5-3<\/strong> is a top choice for delivering high flow, high reliability, and ozone compatibility in one powerful package. Trusted by professionals and field-tested across hundreds of systems, the CM5-3 will keep your ozone water process running efficiently and effectively.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can find this product here: <a href=\"https:\/\/www.oxidationtech.com\/grundfos-cm5-3.html\" data-type=\"link\" data-id=\"https:\/\/www.oxidationtech.com\/grundfos-cm5-3.html\">https:\/\/www.oxidationtech.com\/grundfos-cm5-3.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The CM5-3 Pump from Grundfos is a powerful and ozone-compatible centrifugal pump designed specifically for ozone water systems. Whether you&#8217;re injecting ozone into water with [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":5654,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[211],"tags":[1417,1416],"class_list":["post-5653","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ozone-industry-news","tag-stainless-steel","tag-water-pump"],"_links":{"self":[{"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/posts\/5653","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/comments?post=5653"}],"version-history":[{"count":1,"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/posts\/5653\/revisions"}],"predecessor-version":[{"id":5655,"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/posts\/5653\/revisions\/5655"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/media\/5654"}],"wp:attachment":[{"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/media?parent=5653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/categories?post=5653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oxidationtech.com\/blog\/wp-json\/wp\/v2\/tags?post=5653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}