--- product_id: 168806193 title: "Uniweld NV1 NitroVue Nitrogen Flow Indicator" brand: "uniweld" price: "S$194" currency: SGD in_stock: true url: https://www.desertcart.sg/products/168806193-uniweld-nv1-nitrovue-nitrogen-flow-indicator store_origin: SG region: Singapore --- # Bright orange float ball for instant flow confirmation Precision adjustable valve for exact flow control Reseatable safety blow-off valve at 200 psi Uniweld NV1 NitroVue Nitrogen Flow Indicator **Brand:** uniweld **Price:** S$194 **Availability:** βœ… In Stock ## Summary > 🟠 Flow with confidence, braze with precision. ## Quick Answers - **What is this?** Uniweld NV1 NitroVue Nitrogen Flow Indicator by uniweld - **How much does it cost?** S$194 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/168806193-uniweld-nv1-nitrovue-nitrogen-flow-indicator) ## 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 - β€’ **Pinpoint Flow Control:** Easily dial in nitrogen flow from 3 to 20+ SCFH with precision valve for optimized brazing. - β€’ **Compact & Durable Design:** Lightweight metal construction fits seamlessly into any HVAC or refrigeration toolkit. - β€’ **Built-In Safety Assurance:** Overpressure protection with reseatable blow-off valve ensures worry-free operation up to 200 psi. - β€’ **Cost-Saving Purge & Braze:** Purge copper lines at high flow, then reduce to low flow during brazing to conserve nitrogen and cut costs. - β€’ **Instant Visual Confirmation:** Bright orange float ball provides real-time, unmistakable flow status at a glance. ## Overview The Uniweld NV1 NitroVue Nitrogen Flow Indicator offers precise, easy-to-read control of nitrogen flow during copper tubing brazing. Featuring a bright orange float ball for instant flow verification and a reseatable safety blow-off valve at 200 psi, it ensures efficient purging and brazing while preventing costly oxidation and system failures. Compact and durable, it’s a must-have for HVAC and refrigeration professionals aiming to optimize performance and reduce operating costs. ## Description Uniweld's 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 | |---------------|-------| | Manufacturer | Uniweld | | Part Number | NV1 | | Product Dimensions | 6.05 x 5.08 x 12.7 cm; 217.72 g | | Item model number | NV1 | | Size | Regular | | Colour | Multicolored | | Material | Metal | | Power Source | corded-electric | | Item Package Quantity | 1 | | Included Components | No included components | | Batteries included? | No | | Batteries Required? | No | | Item Weight | 218 g | ## Images ![Uniweld NV1 NitroVue Nitrogen Flow Indicator - Image 1](https://m.media-amazon.com/images/I/61Fl6LAZcdL.jpg) ![Uniweld NV1 NitroVue Nitrogen Flow Indicator - Image 2](https://m.media-amazon.com/images/I/715v9hjHU0L.jpg) ![Uniweld NV1 NitroVue Nitrogen Flow Indicator - Image 3](https://m.media-amazon.com/images/I/71Ql7xRkYJL.jpg) ![Uniweld NV1 NitroVue Nitrogen Flow Indicator - Image 4](https://m.media-amazon.com/images/I/71Ql7xRkYJL.jpg) ![Uniweld NV1 NitroVue Nitrogen Flow Indicator - Image 5](https://m.media-amazon.com/images/I/81MuOStLN4L.jpg) ## 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/168806193-uniweld-nv1-nitrovue-nitrogen-flow-indicator](https://www.desertcart.sg/products/168806193-uniweld-nv1-nitrovue-nitrogen-flow-indicator) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-05-21*