{"product_id":"watflow-dn20-water-meter-3-4ft-npt-gallon-flow-meter-accurate","title":"Watflow DN20 Water Meter 3\/4ft NPT Gallon Flow Meter - Accurate","description":"\u003cp\u003eIn this review of the Watflow DN20 water meter, the bottom line is simple: it is a solid choice for homeowners and light industrial users who need a durable, accurate cold water meter with 3\/4' NPT fittings for gallon-based measurement. The reviewer found the build quality and corrosion-resistant eco-brass construction reassuring for outdoor garden or factory service, and the meter's accuracy across normal and low flow ranges makes it a reliable option for monitoring consumption or integrating with pulse monitoring systems.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion resistance:\u003c\/strong\u003e The main case and measuring chamber are made from eco-brass alloy to resist corrosion in outdoor and industrial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/4' NPT compatibility:\u003c\/strong\u003e Equipped with 3\/4' NPT couplings, the DN20 fits common US installations and measures in gallons for easy readout and system integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured accuracy:\u003c\/strong\u003e The meter delivers a maximum permission error of about 1.5% in the normal flow range and 3% at low flows, which is suitable for most residential and light industrial monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide flow range:\u003c\/strong\u003e The device handles flows from a 0.25 GPM minimum up to a 20 GPM peak, with continuous operation rated around 10 GPM for steady use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServiceable filter:\u003c\/strong\u003e A removable filter at the inlet allows cleaning without breaking the metrological seal, simplifying maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry type register:\u003c\/strong\u003e The top-loaded, dry register makes reading easier and protects the counter from moisture for longer life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Watflow DN20 is best for homeowners, small farms, irrigation setups and light industrial or factory applications that need a reliable cold water meter with standard 3\/4' NPT fittings and gallon units. It is particularly useful when users want a sturdy metal body and a meter that can be cleaned without recalibration concerns.\u003c\/p\u003e\n\u003cp\u003eThose who need potable-water certification or integrated advanced telemetry out of the box should look elsewhere; this model is described as no potable and is focused on basic pulse monitoring compatibility rather than full remote telemetry or specialized certification for drinking water systems.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid eco-brass construction gives good corrosion resistance and perceived long life.\u003c\/li\u003e\n\u003cli\u003eAccurate within 1.5% in normal flow and reasonably accurate at low flows, matching customer reports of good measurement for pulse systems.\u003c\/li\u003e\n\u003cli\u003eEasy to install with common 3\/4' NPT couplings and a dry register that is simple to read.\u003c\/li\u003e\n\u003cli\u003eServiceable inlet filter allows cleaning without breaking the metrological seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot specified for potable use, so it is not suitable where drinking-water certification is required.\u003c\/li\u003e\n\u003cli\u003eAdvanced telemetry or remote read options are not included and would require additional equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eDN20 (3\/4' NPT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread type\u003c\/td\u003e\n\u003ctd\u003e3\/4' NPT couplings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnits\u003c\/td\u003e\n\u003ctd\u003eGallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow range\u003c\/td\u003e\n\u003ctd\u003eMinimum 0.25 GPM, Continuous 10 GPM, Max 20 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003eNormal flow 1.5%, Low flow 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody material\u003c\/td\u003e\n\u003ctd\u003eEco-brass alloy main case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRegister\u003c\/td\u003e\n\u003ctd\u003eTop-loaded dry type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Watflow DN20 is a practical, cost-conscious water meter for non-potable cold water applications where durability and reasonable accuracy matter. It is a good value for homeowners, gardeners and light industrial users who need a metal-bodied, easy-to-service meter with standard 3\/4' NPT fittings and gallon readings, provided potable certification or built-in remote telemetry are not required.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this meter be used for irrigation and garden systems?\u003c\/strong\u003e\u003cbr\u003eYes. Its eco-brass body and 3\/4' NPT fittings make it well suited for garden and irrigation use, and the inlet filter simplifies maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the register protected from moisture?\u003c\/strong\u003e\u003cbr\u003eThe meter uses a top-loaded dry type register, which keeps the counter protected from moisture and makes readings easier.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it support pulse output for monitoring systems?\u003c\/strong\u003e\u003cbr\u003eCustomers report it works well with pulse monitoring systems, though external telemetry modules would be needed for remote data transmission.\u003c\/p\u003e","brand":"Watflow","offers":[{"title":"Default Title","offer_id":48636663365851,"sku":"B0D2KZWNSW","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61N6crsv-8L._SL1500.jpg?v=1778537959","url":"https:\/\/gearmusthave.com\/products\/watflow-dn20-water-meter-3-4ft-npt-gallon-flow-meter-accurate","provider":"GearMustHave","version":"1.0","type":"link"}