---
product_id: 544161859
title: "2Pieces Copper Pipe Extension Joint Connectors for Air Conditioning Pipe Coupling Adapters with Flare Nuts and Connectors for Copper Tube Diameter 3/8 and 1/4-Inch"
brand: "cunguv"
price: "€ 29.25"
currency: EUR
in_stock: true
reviews_count: 8
category: "Cunguv"
url: https://www.desertcart.fi/products/544161859-2pieces-copper-pipe-extension-joint-connectors-for-air-conditioning-pipe
store_origin: FI
region: Finland
---

# Durable pure copper/brass build Fits 1/4" & 3/8" copper pipes No-weld quick connect 2Pieces Copper Pipe Extension Joint Connectors for Air Conditioning Pipe Coupling Adapters with Flare Nuts and Connectors for Copper Tube Diameter 3/8 and 1/4-Inch

**Brand:** cunguv
**Price:** € 29.25
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect with Confidence — Upgrade Your AC Setup Like a Pro!

## Quick Answers

- **What is this?** 2Pieces Copper Pipe Extension Joint Connectors for Air Conditioning Pipe Coupling Adapters with Flare Nuts and Connectors for Copper Tube Diameter 3/8 and 1/4-Inch by cunguv
- **How much does it cost?** € 29.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/544161859-2pieces-copper-pipe-extension-joint-connectors-for-air-conditioning-pipe)

## Best For

- cunguv enthusiasts

## Why This Product

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

## Key Features

- • **Multi-Industry Ready:** Ideal for HVAC, plumbing, fuel, gas, refrigeration, and vacuum systems—your all-in-one connector.
- • **Weld-Free Installation:** Connect copper pipes instantly with no special tools or welding required.
- • **Cost-Saving DIY Solution:** Save hundreds by extending or repairing pipes yourself with easy flare nut tightening.
- • **Heavy-Duty Copper & Brass:** Crafted from premium materials ensuring leak-proof, long-lasting durability under pressure.
- • **Precision Fit for Dual Sizes:** Engineered to perfectly join 1/4" and 3/8" copper tubes for versatile AC and refrigeration setups.

## Overview

These 2-piece copper pipe extension joint connectors provide a quick, weld-free solution for joining 1/4" and 3/8" copper tubes. Made from high-quality pure copper and brass, they ensure a durable, leak-proof connection ideal for air conditioning, refrigeration, plumbing, and fuel systems. Designed for easy installation with just a wrench, they save time and money by eliminating the need for specialized welding equipment.

## Description

desertcart.com: 2Pieces Copper Pipe Extension Joint Connectors for Air Conditioning Pipe Coupling Adapters with Flare Nuts and Connectors for Copper Tube Diameter 3/8 and 1/4-Inch : Industrial & Scientific

Review: Saved hundreds of dollars. - Extremely useful coupler for mini-split. I’ve been installing mini-splits throughout my place. Unfortunately, one of them needed a 24ft pipe set rather than the 15ft pipe set it came with. The mini-split cost $699 and if I wanted a 25ft pipe set it was $225 extra. Two of them only needed 5ft of pipe so I cut them to size, used the supplied fittings and a cheap pipe flaring tool and they were done. This left me more than enough of an offcut to use the supplied spare fittings and the flaring tool to make an ‘extension’ pipe set. It was then a simple job to use this coupler set to join the pipes together, saving well over $200 The unit works perfectly, no leaks. Simple, effective and not just excellent value for money but saved over 20 times what they cost! Highly recommended.
Review: Excellent - Great junctions. I kinked my line set on my mini split while installing. I decided to try this route installing replacing a 50’ lineset. Worked perfectly. Make sure to use a good quality flaring tool and sealant.

## Features

- 【Quick Connection】The AC pipe jointers are designed to connect two copper pipes without welding,without a special welding machine. The connection can be tightened with a wrench, sturdy and durable
- 【Wide Application】Air conditioning copper pipe extension for joint double connector flare fittings can also be applied in fuel and gas systems, plumbing, refrigeration, and vacuum applications
- 【SPECIFICATION】Fit for butt copper tube diameter 1/4" (6mm to 7mm) and 3/8" (9mm to 10mm),to replace an older faulty refrigerator compressor,perfect for stretching copper on a mini split
- 【Package Content】2 sets 100% high quality pure copper solid brass pipe connectors, includes 2 piece of fitting union connector and 4 pieces of flare nuts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C74N5R88 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #20,829 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #454 in Pipe Fittings |
| Brand | Cunguv |
| Color | Copper |
| Connector Type | Coupling |
| Customer Reviews | 4.7 4.7 out of 5 stars (166) |
| Date First Available | June 5, 2023 |
| Exterior Finish | Brass |
| Included Components | Copper Pipe Extension Joint Connectors |
| Item Package Quantity | 1 |
| Item Weight | 5.1 ounces |
| Item dimensions L x W x H | 0.9 x 0.8 x 0.7 inches |
| Item model number | Copper Pipe Extension Joint Connectors |
| Manufacturer | Cunguv |
| Material | Brass, Copper |
| Number of Pieces | 2 |
| Part Number | Copper Pipe Extension Joint Connectors |
| Product Dimensions | 0.9 x 0.8 x 0.7 inches |
| Size | 3/8" and 1/4" |
| Thread Type | NPT |
| UPC | 618202076459 |

## Product Details

- **Brand:** Cunguv
- **Color:** Copper
- **Connector Type:** Coupling
- **Exterior Finish:** Brass
- **Item Weight:** 0.15 Kilograms
- **Item dimensions L x W x H:** 0.9 x 0.8 x 0.7 inches
- **Material:** Brass, Copper
- **Number of Pieces:** 2
- **Size:** 3/8" and 1/4"
- **Thread Type:** NPT

## Images

![2Pieces Copper Pipe Extension Joint Connectors for Air Conditioning Pipe Coupling Adapters with Flare Nuts and Connectors for Copper Tube Diameter 3/8 and 1/4-Inch - Image 1](https://m.media-amazon.com/images/I/6182dJtUULL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Saved hundreds of dollars.
*by W***W on March 29, 2025*

Extremely useful coupler for mini-split. I’ve been installing mini-splits throughout my place. Unfortunately, one of them needed a 24ft pipe set rather than the 15ft pipe set it came with. The mini-split cost $699 and if I wanted a 25ft pipe set it was $225 extra. Two of them only needed 5ft of pipe so I cut them to size, used the supplied fittings and a cheap pipe flaring tool and they were done. This left me more than enough of an offcut to use the supplied spare fittings and the flaring tool to make an ‘extension’ pipe set. It was then a simple job to use this coupler set to join the pipes together, saving well over $200 The unit works perfectly, no leaks. Simple, effective and not just excellent value for money but saved over 20 times what they cost! Highly recommended.

### ⭐⭐⭐⭐⭐ Excellent
*by P***L on August 11, 2025*

Great junctions. I kinked my line set on my mini split while installing. I decided to try this route installing replacing a 50’ lineset. Worked perfectly. Make sure to use a good quality flaring tool and sealant.

### ⭐⭐⭐⭐⭐ Worked great in allowing me to extend the tubing for my mini AC unit
*by I***! on December 5, 2024*

I needed to add about 6 feet of tubing so my condensing unit could be located at the desired spot. These worked great and were easy when installing my extension. Material is solid and substanial so this should be around for as long as the unit lasts.

## Frequently Bought Together

- 2Pieces Copper Pipe Extension Joint Connectors for Air Conditioning Pipe Coupling Adapters with Flare Nuts and Connectors for Copper Tube Diameter 3/8 and 1/4-Inch
- Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)
- DELLA 25 Ft Mini Split Line Set, Includes 3/8" & 1/4" O.D. copper pipes with flared nuts and a 3/8" thick white PE insulated coil. Perfect for mini split ACs and other HVAC systems

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-26*