---
product_id: 61297208
title: "LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA"
brand: "la-co"
price: "VT3693"
currency: VUV
in_stock: true
category: "La Co"
url: https://www.desertcart.vu/products/61297208-la-co-22194-water-soluble-all-weather-copper-flux-paste
store_origin: VU
region: Vanuatu
---

# Water-soluble, no residue All-weather, hot & cold use Non-toxic, lead-free safety LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA

**Brand:** la-co
**Price:** VT3693
**Availability:** ✅ In Stock

## Summary

> 🔥 Flux that flows clean, safe, and strong—because your pipes deserve the best! 💧

## Quick Answers

- **What is this?** LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA by la-co
- **How much does it cost?** VT3693 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/61297208-la-co-22194-water-soluble-all-weather-copper-flux-paste)

## Best For

- la-co enthusiasts

## Why This Product

- Trusted la-co brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safe & Sustainable:** Non-acidic, lead-free, and non-toxic—engineered for worry-free, eco-conscious soldering.
- • **Precision Application:** Brush-in cap design for controlled, mess-free use—perfect for professional plumbers and DIY pros.
- • **Built for Every Climate:** All-weather paste performs flawlessly from freezing winters to scorching summers.
- • **Clean & Clear Performance:** Water-soluble formula leaves zero residue, ensuring pristine plumbing joints every time.
- • **Industry-Approved Reliability:** Meets ASTM B813 and NSF-61 standards, trusted for potable water systems.

## Overview

The LA-CO 22194 Copper Flux Paste is a 4 oz, water-soluble, non-toxic soldering aid designed for copper and brass plumbing. It meets ASTM B813 and NSF-61 standards, ensuring safe use in potable water systems. Its all-weather formula works in extreme temperatures, while the brush-in cap allows precise application. Lead-free and non-acidic, it cleans pipes during soldering for smooth, corrosion-free joints.

## Description

Water Soluble Lead Free Flux, Water Soluble Paste, Organic, Working Range Below 800 Deg F, Specific Gravity 1.11, Container Type Jar, Container Size 4 oz BIC, For Joining Copper to Copper and Copper to Brass, Standards NSF-61G, ASTM-B814

## Features

- Water-soluble paste won’t leave residue in water piping
- Meets industry standard ASTM B813 and contains no zinc chloride to reduce corrosion concerns
- Non-acid, non-toxic, and lead-free to eliminate safety concerns
- Cleans pipe upon application, allowing solder to run more smoothly around the pipe
- All-weather formula for use in hot and cold climates. Meets ANSI/NSF Std. 61 specifications for Potable Water use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002DLU96O |
| Best Sellers Rank | #26,951 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #37 in Soldering Flux |
| Date First Available | May 25, 2017 |
| Department | All Ages |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.3 ounces |
| Item model number | 22194 |
| Manufacturer | La-Co |
| Product Dimensions | 1 x 1 x 1 inches |

## Images

![LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA - Image 1](https://m.media-amazon.com/images/I/71OrD7epoLL.jpg)

## Questions & Answers

**Q: Since this is water soluble, can it be used on pcb's and electronics? will it corrode over time? it's non-acid.**
A: NO....do not use this on electronics or pcb's as it will corrode with that green corrosion. I have tried it and that is what happens. In a water pipe it is fine as it all washes away naturally.

**Q: I have a ring that snapped and i want to fix it, i can still wear the ring but the part where it snapped pinches the skin. can i use it on jewelry?**
A: This would likely corrode the ring badly. Its removes oxidized layers so solder can stick to the base metal. It's very acidic and corrosive.

## Frequently Bought Together

- LA-CO 22194 -Water Soluble, All Weather Copper Flux Paste for Soldering, Brush in Cap, Developed for Plumbing, 4 oz, Made in USA
- AIM Lead-Free Plumbing Solder, Silver Bearing, 0.125inch dia, 1/2 Lb Spool
- Pro Grade - Acid Brushes - 36 Count 3/8 Inch Boar Hair Acid Flux Brushes

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**Shop now:** [https://www.desertcart.vu/products/61297208-la-co-22194-water-soluble-all-weather-copper-flux-paste](https://www.desertcart.vu/products/61297208-la-co-22194-water-soluble-all-weather-copper-flux-paste)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-10*