{"product_id":"viqua-pro20-uv-system","title":"Viqua PRO20 UV System","description":"\u003cdiv class=\"product-description-seo\"\u003e\n\u003ch2\u003eViqua PRO20 UV System: NSF\/ANSI 55 Class A Disinfection at 20 GPM\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eViqua PRO20\u003c\/strong\u003e is a monitored, \u003cstrong\u003eNSF\/ANSI 55 Class A certified\u003c\/strong\u003e ultraviolet disinfection system rated for \u003cstrong\u003e20 GPM at the certified 40 mJ\/cm2 NSF\/EPA dose\u003c\/strong\u003e (measured at 70% UV transmittance). It is the system we recommend for \u003cstrong\u003elarge well homes with 5 to 7 or more bathrooms\u003c\/strong\u003e and for \u003cstrong\u003elight-commercial applications\u003c\/strong\u003e (small businesses, offices, rental properties) that have a confirmed coliform or E. coli problem and a peak demand the \u003ca href=\"\/products\/viqua-vh410-uv-system\"\u003eViqua VH410\u003c\/a\u003e cannot cover at its certified dose. The system was tested and certified by NSF International against CSA B483.1 and NSF\/ANSI 55 for Disinfection Performance, Class A. Manufactured by VIQUA, a Trojan Technologies company and the world's largest residential UV manufacturer.\u003c\/p\u003e\n\n\u003cp\u003eUV disinfection inactivates 99.99% of bacteria, viruses, and protozoan cysts, including E. coli, total and fecal coliform, Cryptosporidium, Giardia, and rotavirus, without adding any chemicals to your water. It does not change taste, does not produce disinfection byproducts, and does not remove anything from the water. It is a kill step, not a filter.\u003c\/p\u003e\n\n\u003ch3\u003eWhy the Monitored Design Matters\u003c\/h3\u003e\n\u003cp\u003eMost residential UV systems, including the VH410, run open-loop: the lamp is on, and you trust that the dose is adequate. The PRO20 closes that loop. A \u003cstrong\u003eUV intensity sensor\u003c\/strong\u003e in the chamber measures actual UV output, and an \u003cstrong\u003eintegrated flow meter\u003c\/strong\u003e measures actual flow. The controller combines the two and displays the \u003cstrong\u003ereal-time UV dose in mJ\/cm2\u003c\/strong\u003e on screen. If sleeve fouling, lamp aging, or a flow spike pushes the dose toward the unsafe range, you know immediately instead of finding out at the next water test. An optional plug-and-play \u003cstrong\u003esolenoid valve (part 650627)\u003c\/strong\u003e can stop water flow automatically if UV performance drops below a safe level, and an optional 4-20mA sensor output ties the system into building monitoring.\u003c\/p\u003e\n\n\u003ch3\u003eLightWise Technology\u003c\/h3\u003e\n\u003cp\u003eIn a typical home, no-flow periods account for as much as 60% of the day. During those periods a standard UV lamp heats the standing water in the chamber, which accelerates mineral fouling on the quartz sleeve. VIQUA's \u003cstrong\u003eLightWise technology\u003c\/strong\u003e dims the lamp when no flow is detected: water temperature stays below 104 F, \u003cstrong\u003esleeve fouling is reduced by up to 60%\u003c\/strong\u003e, and energy consumption drops by roughly 30% compared to a standard always-on system. Less fouling means longer intervals between sleeve cleanings and a more stable delivered dose. A CoolTouch fan further reduces chamber temperature without wasting any water.\u003c\/p\u003e\n\n\u003ch3\u003eWho Should Buy the VH410 Instead\u003c\/h3\u003e\n\u003cp\u003eBe honest with yourself about peak flow. The \u003ca href=\"\/products\/viqua-vh410-uv-system\"\u003eViqua VH410\u003c\/a\u003e ($995) is also NSF\/ANSI 55 Class A and covers 14 GPM at the certified 40 mJ\/cm2 dose (18 GPM peak), which handles most 3 to 5 bathroom homes. If your home is in that range, the VH410 is the better value. Buy the PRO20 when you genuinely need 20 GPM at the certified dose, when you want the monitored sensor and real-time dose confirmation, or when the application is light commercial and a 2-year lamp interval matters for service costs.\u003c\/p\u003e\n\n\u003ch3\u003ePre-Treatment Requirements (Read Before Buying)\u003c\/h3\u003e\n\u003cp\u003eUV only works on clear, pre-treated water. The lamp cannot kill what it cannot reach, and dissolved minerals shadow the UV and foul the sleeve. The PRO20 requires water that meets these limits at the chamber inlet:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness below 7 grains per gallon\u003c\/strong\u003e - install a water softener upstream if harder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIron below 0.3 mg\/L\u003c\/strong\u003e - install an \u003ca href=\"\/collections\/iron-sulfur-removal-filters-for-well-water\"\u003eiron filter\u003c\/a\u003e upstream if higher\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTannins below 0.1 mg\/L\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-micron sediment pre-filter\u003c\/strong\u003e immediately ahead of the chamber - a \u003ca href=\"\/products\/20-inch-big-blue-sediment-filter-kit\"\u003e20\" Big Blue sediment filter\u003c\/a\u003e is the standard choice\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUV is always the \u003cstrong\u003elast stage\u003c\/strong\u003e in the treatment train: sediment, iron, pH correction, and softening all happen upstream, and the PRO20 disinfects the finished water just before it enters the house. If you are not sure what pre-treatment your water needs, send us your water test and we will lay out the full train. If you have not tested yet, start with a \u003ca href=\"\/products\/well-water-test-kit\"\u003ewell water test kit\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cp\u003eThe PRO20's high-output \u003cstrong\u003eamalgam lamp lasts up to 2 years\u003c\/strong\u003e (replacement lamp part 602855), double the annual interval of standard UV lamps. The controller shows lamp life remaining on screen, sounds an audible replacement reminder, and alarms on lamp failure. The quartz sleeve (part 602975) is cleaned periodically and replaced when etched or permanently fouled; the sleeve bolts are tool-free, a quarter twist to a positive stop, with no risk of over-tightening. Keep the upstream 5-micron sediment cartridge fresh and the sleeve stays cleaner longer.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eNSF\/ANSI 55 Class A; tested by NSF International against CSA B483.1 and NSF\/ANSI 55 for Disinfection Performance, Class A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCertified flow rate\u003c\/th\u003e\n\u003ctd\u003e20 GPM (76 lpm) at the 40 mJ\/cm2 NSF\/EPA dose, at 70% UVT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChamber\u003c\/th\u003e\n\u003ctd\u003e316L stainless steel, 31\" x 4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eController\u003c\/th\u003e\n\u003ctd\u003e13\" x 6.5\" x 4.5\"; UV intensity sensor, integrated flow meter, real-time UV dose display, visual lamp life remaining, audible lamp failure alarm and replacement reminder, CoolTouch fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLamp\u003c\/th\u003e\n\u003ctd\u003eHigh-output amalgam lamp, up to 2-year life (replacement part 602855)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuartz sleeve\u003c\/th\u003e\n\u003ctd\u003ePart 602975, tool-free quarter-twist sleeve bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInlet\/Outlet\u003c\/th\u003e\n\u003ctd\u003e1-1\/4\" MNPT \/ 1\" FNPT combo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical\u003c\/th\u003e\n\u003ctd\u003e100-240V, 50\/60 Hz, 160W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax operating pressure\u003c\/th\u003e\n\u003ctd\u003e125 psi (8.62 bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInfluent water temperature\u003c\/th\u003e\n\u003ctd\u003e36-104 F (2-40 C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping weight\u003c\/th\u003e\n\u003ctd\u003e28 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptions\u003c\/th\u003e\n\u003ctd\u003ePlug-and-play solenoid shutoff valve (650627); 4-20mA sensor output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eVIQUA, a Trojan Technologies company\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eVertical installation is mandatory\u003c\/strong\u003e per VIQUA. The chamber mounts vertically with the lamp connector up, after all other treatment equipment and before the first tee to the house. Plan clearance above the chamber for lamp and sleeve removal. The integrated flow restrictor simplifies assembly, the combo 1-1\/4\" MNPT \/ 1\" FNPT ports adapt to most plumbing, and the controller plugs into a standard outlet with no grounding wires. Use copper or other UV-resistant pipe for the short runs immediately at the chamber; UV degrades PEX.\u003c\/p\u003e\n\n\u003cp\u003eWant help deciding between the PRO20 and the VH410, or sizing the full treatment train? See our \u003ca href=\"\/blogs\/guides\/uv-water-filter-complete-guide\"\u003ecomplete UV water filter guide\u003c\/a\u003e, our guide to \u003ca href=\"\/blogs\/faqs\/commercial-uv-water-treatment\"\u003ecommercial UV water treatment\u003c\/a\u003e, and \u003ca href=\"\/blogs\/faqs\/uv-water-filter-well-water\"\u003eUV for well water\u003c\/a\u003e, or browse all \u003ca href=\"\/collections\/ultraviolet-uv-water-disinfection-systems\"\u003eUV disinfection systems\u003c\/a\u003e. Call or text Aidan at \u003cstrong\u003e800-460-5810\u003c\/strong\u003e with your water test, 7 days a week.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFree shipping. Real water treatment specialists with 30+ years of experience.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"VIQUA","offers":[{"title":"Default Title","offer_id":54190529446172,"sku":"VIQUA-PRO20","price":4395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/9523\/4605\/files\/viqua-pro20-uv-system-nsf-55-class-a-20-gpm.jpg?v=1781047149","url":"https:\/\/midatlanticwater.net\/products\/viqua-pro20-uv-system","provider":"Mid Atlantic Water","version":"1.0","type":"link"}