---
product_id: 13472916
title: "Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz."
brand: "uniweld"
price: "₪378"
currency: ILS
in_stock: true
reviews_count: 8
category: "Uniweld"
url: https://www.desertcart.co.il/products/13472916-uniweld-nv1-nitrovue-nitrogen-flow-indicator-gold-silver-7-7
store_origin: IL
region: Israel
---

# Bright orange float ball for instant flow confirmation Precision adjustable valve for exact nitrogen flow Reseatable safety blow-off valve at 200 psi Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz.

**Brand:** uniweld
**Price:** ₪378
**Availability:** ✅ In Stock

## Summary

> 🛠️ Master your nitrogen flow like a pro—never braze blind again!

## Quick Answers

- **What is this?** Uniweld NV1 NitroVue Nitrogen Flow Indicator, gold/silver, 7.7 oz. by uniweld
- **How much does it cost?** ₪378 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/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

- • **Compact & Lightweight:** Just 7.7 oz and sleek design fits perfectly in any HVAC toolkit
- • **Cost-Efficient Purging:** Purge at 20+ SCFH then reduce flow to save nitrogen and cut costs
- • **Built-In Safety Assurance:** Overpressure protection with reseatable blow-off valve at 200 psi
- • **Instant Visual Confirmation:** Bright orange float ball ensures nitrogen is flowing—no guesswork
- • **Total Control Over Nitrogen Flow:** Precision valve lets you dial in 3-5 SCFH for flawless brazing

## Overview

The Uniweld NV1 NitroVue is a compact, precision nitrogen flow indicator designed for HVAC professionals. Featuring an easy-to-read label, a bright orange float ball for immediate flow verification, and a precision adjustable valve, it enables exact control of nitrogen flow during brazing. Its built-in reseatable safety blow-off valve protects against overpressure up to 200 psi, ensuring safe and efficient purging and brazing of copper tubing to prevent oxidation and system failure.

## 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.

Review: Works perfectly for me - I use this during brazing flow and purge rates work fine. Would definitely recommend for anyone
Review: Great tool - HVAC tech here , and very good tool for the job

## 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 | #54,412 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #22 in Flowmeters |
| Brand Name | Uniweld |
| Color | silver |
| Customer Reviews | 4.6 4.6 out of 5 stars (892) |
| 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly for me
*by P***Y on July 12, 2024*

I use this during brazing flow and purge rates work fine. Would definitely recommend for anyone

### ⭐⭐⭐⭐⭐ Great tool
*by A***X on August 11, 2025*

HVAC tech here , and very good tool for the job

### ⭐⭐⭐⭐⭐ Uniweld NV1 NitroVue Nitrogen Flow Indicator
*by S***K on May 30, 2020*

This Uniweld nitrogen flow indicator is nicely made from machined aluminum and is easy to use. It is very compact and uses a simple flow ball with a color scale marked 3-5 SCFH for brazing and yellow for 20+ SCFH for purging. It has built-in 200-psi overpressure protection. I made up a short piece of 3/8” copper tubing with a couple of flare fittings so I could set it up for vertical use for my nitro tanks. I find it great for quick set up when flowing nitro for brazing. No more bulky and fragile nitro flow gauge setup needed for brazing and to get banged around on the job all day long. This little flow indicator seems to be working just fine for my needs.

## 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.

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-03-01*