{"product_id":"uniweld-nv1-nitro-vue-flow-indicator-with-1-4ft-flare-fittings","title":"Uniweld NV1 Nitro Vue Flow Indicator with 1\/4ft Flare Fittings","description":"\u003cp\u003eIn this review the Uniweld NV1 NitroVue Flow Indicator is evaluated as a simple, task-focused tool for HVACR technicians who need reliable nitrogen purging while brazing copper tubing. The single biggest reason to buy is the clear visual confirmation of gas flow combined with a precision adjustable valve that lets a user purge at high flow then quickly step down to the 3-5 SCFH braze range, saving gas and reducing scale risk during brazing. It is an uncomplicated accessory that targets the basic, essential needs of purge and braze work.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy to read label:\u003c\/strong\u003e The flow indicator label is straightforward so technicians can set purge and braze flows without guesswork.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision adjustable valve:\u003c\/strong\u003e Allows fine control of low nitrogen flow to maintain the 3-5 SCFH braze setting required for proper purging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright orange float ball:\u003c\/strong\u003e Provides instant visual confirmation that nitrogen is moving through the line during both purge and brazing stages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh purge capability:\u003c\/strong\u003e Designed to purge copper lines at 20+ SCFH before reducing to braze flow, enabling a two-step workflow that conserves gas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety blow off:\u003c\/strong\u003e A reseatable safety blow off protects the unit from over pressure by opening at about 200 psi.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eHVACR technicians, refrigeration service techs, and contractors who perform routine brazing and need a compact, visual flow indicator will find this device practical and cost effective. It fits workflows where techs purge long runs of copper or want a quick visual check that nitrogen is flowing before heating joints.\u003c\/p\u003e\n\u003cp\u003eThose needing multi-gas compatibility, digital readouts, or precise calibrated metering for scientific applications should look elsewhere; the NV1 is built for field brazing and purging tasks rather than laboratory-grade flow measurement.\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\u003eClear visual float gives immediate confirmation of nitrogen flow for safer brazing.\u003c\/li\u003e\n\u003cli\u003eAdjustable valve delivers controlled low flow so users can conserve nitrogen at the braze stage.\u003c\/li\u003e\n\u003cli\u003eSimple setup and 1\/4' flare fittings make it easy to integrate into common service hoses.\u003c\/li\u003e\n\u003cli\u003eReseatable safety blow off offers protection from accidental over pressure events up to 200 psi.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe clear plastic tube has shown mixed durability in some user reports and may be prone to cracking under rough handling.\u003c\/li\u003e\n\u003cli\u003eNot intended for applications that require numeric digital flow readouts or multi-gas calibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eNV1 NitroVue Nitrogen Flow Indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFittings\u003c\/td\u003e\n\u003ctd\u003e1\/4' flare fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow ranges\u003c\/td\u003e\n\u003ctd\u003ePurge at 20+ SCFH; Braze at 3-5 SCFH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual indicator\u003c\/td\u003e\n\u003ctd\u003eBright orange float ball\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety feature\u003c\/td\u003e\n\u003ctd\u003eReseatable safety blow off at about 200 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eSilver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Uniweld NV1 is a practical, economical choice for technicians who need a straightforward nitrogen flow indicator for purging and brazing copper tubing. It offers easy visual confirmation and precise low-flow control that help conserve gas and reduce internal oxidation, making it good value for field service work despite some reports of limited plastic tube durability.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this be used to purge and then braze copper tubing?\u003c\/strong\u003e\u003cbr\u003eYes. The unit is designed to purge at 20+ SCFH and then be tuned down to the recommended 3-5 SCFH braze flow using the adjustable valve.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat fittings does it use?\u003c\/strong\u003e\u003cbr\u003eThe NV1 ships with 1\/4' flare fittings for easy connection to common nitrogen service lines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there over pressure protection?\u003c\/strong\u003e\u003cbr\u003eYes. A reseatable safety blow off activates at approximately 200 psi to protect the indicator from over pressure.\u003c\/p\u003e","brand":"Uniweld","offers":[{"title":"Default Title","offer_id":48609240875227,"sku":"B00LSVW4AY","price":67.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61Fl6LAZcdL._AC_SL1500.jpg?v=1778355740","url":"https:\/\/gearmusthave.com\/products\/uniweld-nv1-nitro-vue-flow-indicator-with-1-4ft-flare-fittings","provider":"GearMustHave","version":"1.0","type":"link"}