---
product_id: 92635354
title: "Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black"
brand: "supplygiant"
price: "€ 133.38"
currency: EUR
in_stock: true
reviews_count: 8
category: "Supplygiant"
url: https://www.desertcart.de/products/92635354-supply-giant-6i4ix4-flexible-coupling-6-inch-black
store_origin: DE
region: Germany
---

# Certified for underground use 6-inch universal fit Leak-proof & rot-proof seal Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black

**Brand:** supplygiant
**Price:** € 133.38
**Availability:** ✅ In Stock

## Summary

> 🔗 Lock in your flow with the coupling that means business.

## Quick Answers

- **What is this?** Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black by supplygiant
- **How much does it cost?** € 133.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/92635354-supply-giant-6i4ix4-flexible-coupling-6-inch-black)

## Best For

- supplygiant enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Sealed:** Engineered leak-proof and rot-proof to keep your systems airtight and infiltration-free.
- • **Multipurpose Use:** Ideal for non-pressure drain, waste, vent, and sewer systems—indoors or outdoors, no compromises.
- • **Flexible Strength:** Rubber coupling flexes to clamp tightly, ensuring a secure fit even on slightly oversized pipes.
- • **Certified Reliability:** Meets ASTM C1173, CSA B602, and UPC standards—trusted for both indoor and underground applications.
- • **Universal Compatibility:** Seamlessly connects cast iron, copper, plastic & schedule 40 steel pipes for ultimate versatility.

## Overview

The Supply Giant 6I4Ix4 Flexible Coupling is a robust 6-inch connector designed for universal compatibility with cast iron, copper, plastic, and schedule 40 steel pipes. Certified for underground use and built to ASTM and CSA standards, it offers a leak-proof, rot-proof seal ideal for non-pressure drain, waste, vent, and sewer systems. Its flexible rubber design ensures a tight fit, making it a reliable choice for professional-grade plumbing solutions.

## Description

⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Review: Update: 07/31/2021 I am sold on these as 4" PVC pipe couplers! - 07/31/2021:Update: I'm currently rebuilding my dust collection system (removing old duct tape, replacing some hose with 4" pvc pipe and replacing connections with these couplers). I am thoroughly impressed with these couplers. With a little effort you can work these over the larger elbow/splitter end. You can use a flat head screw driver but a drill with a 8mm socket will be way faster for tightening. I have had to add additional ceiling strapping to hold up the additional pipe and because the rubber coupling are a heavier than tape. Be showing picture soon. 07/19/2021: Update: I change my rating because even though there is a lot of space between the couplings and a 4" pipe the rubber is flexible enough to really clamp down and hold air tight. I use all four of them and I am presently surprised. Ordered another set of 4. Disregard my previous rating. +++++++++++++++++++++++++++++++++++++++++++ This coupler is way bigger than 4" It is closer to 4.5" The pictures do show the inside diameter as 4.5"...my 'beef' is then why call them 4" couplers. My bad...an I'll eat this one, but it won't happen again!
Review: Not for dust collection - I don’t feel it’s fair to give this product less than five stars, because it appears sturdy and as advertised, but it doesn’t meet my needs at all. I bought this to connect four-inch pvc (sewer) pipes and gates for a wood shop sawdust collection system, but these couplings are so oversized as to be unusable for this purpose. I can’t tighten them enough to form a proper seal; they bulge and deform too much.

## Features

- Universal Fit: Flexible Coupling Compatible with cast Iron, Copper, plastic, and schedule 40 steel piping
- Sealed: Flexible Connectors are Leak-Proof, rot-Proof and Sealed against infiltration and exfiltration,
- Use: may be used for Non-Pressure Drain, waste, and vent (dwv) piping Systems and sewer Systems indoors and outdoors
- ConForms to ASTM C1173, CSA B602, Certified and UPC approved, rated for underground use
- Markings: each rubber Fitting is marked with part Number, size, and Certifications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FL4V9GW |
| Batteries Required? | No |
| Best Sellers Rank | #245,908 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7,555 in Pipe Fittings |
| Brand | SUPPLYGIANT |
| Color | Black |
| Connector Type | Coupling |
| Customer Reviews | 4.4 4.4 out of 5 stars (95) |
| Date First Available | July 10, 2018 |
| Global Trade Identification Number | 00804595277409 |
| Included Components | coupling |
| Item Package Quantity | 1 |
| Item Weight | 0.01 ounces |
| Item dimensions L x W x H | 6 x 6 x 8 inches |
| Item model number | 6I4Ix4 |
| Manufacturer | Everflow |
| Material | Alloy Steel, Copper, Iron, Plastic |
| Measurement System | inch |
| Number of Pieces | 4 |
| Part Number | 6I4Ix4 |
| Product Dimensions | 6 x 6 x 8 inches |
| Set Name | Pack of 4 |
| Size | 6 Inch |
| Style | Pack of 4 |
| UPC | 804595277409 |

## Product Details

- **Brand:** SUPPLYGIANT
- **Color:** Black
- **Connector Type:** Coupling
- **Global Trade Identification Number:** 00804595277409
- **Item Weight:** 0.01 Ounces
- **Item dimensions L x W x H:** 6 x 6 x 8 inches
- **Manufacturer:** Everflow
- **Material:** Alloy Steel, Copper, Iron, Plastic
- **Number of Pieces:** 4
- **Size:** 6 Inch

## Images

![Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black - Image 1](https://m.media-amazon.com/images/I/61nY5FOUdkL.jpg)
![Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black - Image 2](https://m.media-amazon.com/images/I/71i8JaU2XfL.jpg)
![Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black - Image 3](https://m.media-amazon.com/images/I/61qEh4e7PQL.jpg)
![Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black - Image 4](https://m.media-amazon.com/images/I/61noYnUqZbL.jpg)
![Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black - Image 5](https://m.media-amazon.com/images/I/61CqRa4yF+L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Update: 07/31/2021 I am sold on these as 4" PVC pipe couplers!
*by L***A on June 30, 2021*

07/31/2021:Update: I'm currently rebuilding my dust collection system (removing old duct tape, replacing some hose with 4" pvc pipe and replacing connections with these couplers). I am thoroughly impressed with these couplers. With a little effort you can work these over the larger elbow/splitter end. You can use a flat head screw driver but a drill with a 8mm socket will be way faster for tightening. I have had to add additional ceiling strapping to hold up the additional pipe and because the rubber coupling are a heavier than tape. Be showing picture soon. 07/19/2021: Update: I change my rating because even though there is a lot of space between the couplings and a 4" pipe the rubber is flexible enough to really clamp down and hold air tight. I use all four of them and I am presently surprised. Ordered another set of 4. Disregard my previous rating. +++++++++++++++++++++++++++++++++++++++++++ This coupler is way bigger than 4" It is closer to 4.5" The pictures do show the inside diameter as 4.5"...my 'beef' is then why call them 4" couplers. My bad...an I'll eat this one, but it won't happen again!

### ⭐⭐⭐⭐⭐ Not for dust collection
*by A***N on March 27, 2024*

I don’t feel it’s fair to give this product less than five stars, because it appears sturdy and as advertised, but it doesn’t meet my needs at all. I bought this to connect four-inch pvc (sewer) pipes and gates for a wood shop sawdust collection system, but these couplings are so oversized as to be unusable for this purpose. I can’t tighten them enough to form a proper seal; they bulge and deform too much.

### ⭐⭐⭐⭐⭐ Makes building a dust collection system easier
*by R***W on March 10, 2023*

I had to add a Y fitting and blast gates to my dust collection system. I find it difficult to find the exact fittings to cobble the system together - these flexible fittings make it a lot easier.

## Frequently Bought Together

- Supply Giant 6I4Ix4 Flexible Coupling, 6 inch, Black
- Supply Giant 6I49x10 Flexible Coupling, 4 inch, Black
- Supply Giant 6I48x10 Flexible Coupling, 3 inch, Black

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-16*