--- product_id: 13472916 title: "Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz." brand: "uniweld" price: "455.35 DT" currency: TND in_stock: true reviews_count: 13 category: "Uniweld" url: https://www.desertcart.tn/products/13472916-uniweld-nv1-nitrovue-nitrogen-flow-indicator-gold-silver-7-7 store_origin: TN region: Tunisia --- # Bright orange float ball Precision adjustable valve Safety blow off at 200 psi Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz. **Brand:** uniweld **Price:** 455.35 DT **Availability:** ✅ In Stock ## Summary > 🛠️ Master your nitrogen flow like a pro—precision, safety, and savings in one sleek tool! ## Quick Answers - **What is this?** Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz. by uniweld - **How much does it cost?** 455.35 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/13472916-uniweld-nv1-nitrovue-nitrogen-flow-indicator-gold-silver-7-7) ## Best For - uniweld enthusiasts ## Why This Product - Trusted uniweld brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built-In Safety:** Reseatable blow off valve activates at 200 psi to protect your system from overpressure risks. - • **Total Flow Control:** Precision valve lets you dial in nitrogen flow from purge to braze with surgical accuracy. - • **Compact & Lightweight:** At just 7.7 oz and slim dimensions, it fits seamlessly into any HVAC or refrigeration toolkit. - • **Cost-Saving Efficiency:** Purge at 20+ SCFH then reduce to 3-5 SCFH to conserve nitrogen and cut operating expenses. - • **Instant Visual Confirmation:** Bright orange float ball ensures you never guess if nitrogen is flowing—see it, trust it. ## Overview The Uniweld NV1 NitroVue Nitrogen Flow Indicator is a compact, precision-engineered device designed for HVAC and refrigeration professionals to control and monitor low nitrogen gas flow during brazing. Featuring an easy-to-read flow label, a bright orange float ball for instant flow confirmation, and a safety blow off valve that activates at 200 psi, it ensures efficient purging and brazing while preventing internal oxidation and costly system failures. ## Description Uniweld NV1 NitroVue Nitrogen Flow Indicator is nitrogen purging simplified. The easy to read flow indicator label and the precision adjustable valve give complete control over the low flow of nitrogen gas during the brazing of copper tubing in Air Conditioning and Refrigeration systems. The bright orange float ball visually confirms the flow of nitrogen gas and allows the technician to first "Purge" the copper lines at 20+ SCFH and then reduce the flow to "Braze" at 3-5 SCFH during the brazing process thus conserving its consumption and reducing operating cost. The nitrogen must be flowing to displace the oxygen inside the tubing during the brazing process, preventing internal oxidation and the resulting scale. Scale build up inside the tubing can cause blockage in the TXV and within the Air Conditioning and Refrigeration system resulting in premature failure. If the orange ball does not rise in the tube there is no flow of nitrogen, only static pressure and oxygen is not being displaced. The NV1 must be connected to a Nitrogen Regulator with the delivery pressure set at 60 psi to control the nitrogen gas pressure. The NV1 can be used with complete confidence because it is protected from over pressure with a reseatable safety blow off that opens at 200 psi. ## Features - Easy to read flow indicator label and the precision adjustable valve give complete control over the low flow of nitrogen gas - Bright orange float ball visually confirms the flow of nitrogen gas - Purge the copper lines at 20+ SCFH and then reduce the flow to Braze at 3-5 SCFH during the brazing process - Protected from over pressure with a reseatable safety blow off that opens at 200 psi ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00LSVW4AY | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #32,075 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13 in Flowmeters | | Brand Name | Uniweld | | Color | silver | | Customer Reviews | 4.6 4.6 out of 5 stars (897) | | Date First Available | July 14, 2014 | | Included Components | No included components | | Is Discontinued By Manufacturer | No | | Item Weight | 7.7 ounces | | Item model number | NV1 | | Model Info | NV1 | | Part Number | NV1 | | Product Dimensions | 2.38 x 2 x 5 inches | | Thickness | 1 Inches | ## Images ![Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz. - Image 1](https://m.media-amazon.com/images/I/61Fl6LAZcdL.jpg) ![Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz. - Image 2](https://m.media-amazon.com/images/I/715v9hjHU0L.jpg) ![Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz. - Image 3](https://m.media-amazon.com/images/I/71Ql7xRkYJL.jpg) ![Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz. - Image 4](https://m.media-amazon.com/images/I/81MuOStLN4L.jpg) ![Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz. - Image 5](https://m.media-amazon.com/images/I/71aovNnlnzL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by R***B on March 7, 2026* ### ⭐⭐⭐⭐⭐ Review *by P***Y on July 12, 2024* ### ⭐⭐⭐⭐⭐ Review *by A***X on August 11, 2025* ## Frequently Bought Together - Uniweld NV1 Nitro Vue Flow Indicator with 1/4" Flare Fittings Single-Gas Flowmeter, Regular, Silver - Appion MGAVCT 1/4" MegaFlow Vacuum-Rated Valve Core Removal Tool - Refrigeration Technologies RT400P Viper Wetrag Heat Blocking Putty Jar (1), 12 oz. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/13472916-uniweld-nv1-nitrovue-nitrogen-flow-indicator-gold-silver-7-7](https://www.desertcart.tn/products/13472916-uniweld-nv1-nitrovue-nitrogen-flow-indicator-gold-silver-7-7) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-08*