---
product_id: 325938184
title: "Supply Giant 6I49x4 Flexible Coupling, 4 inch, Black"
brand: "supply giant"
price: "₩157779"
currency: KRW
in_stock: true
reviews_count: 5
category: "Supply Giant"
url: https://www.desertcart.kr/products/325938184-supply-giant-6i49x4-flexible-coupling-4-inch-black
store_origin: KR
region: South Korea
---

# Certified for underground & outdoor use Universal fit across 4 pipe materials Leak-proof & rot-proof sealed design Supply Giant 6I49x4 Flexible Coupling, 4 inch, Black

**Brand:** supply giant
**Price:** ₩157779
**Availability:** ✅ In Stock

## Summary

> 🔗 Lock in your plumbing game with Supply Giant’s flexible coupling—where durability meets versatility!

## Quick Answers

- **What is this?** Supply Giant 6I49x4 Flexible Coupling, 4 inch, Black by supply giant
- **How much does it cost?** ₩157779 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/325938184-supply-giant-6i49x4-flexible-coupling-4-inch-black)

## Best For

- supply giant enthusiasts

## Why This Product

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

## Key Features

- • **Leak & Rot Proof:** Engineered to prevent infiltration and exfiltration, ensuring airtight, watertight pipe connections every time.
- • **Durable & Resilient:** Made from tough elastomeric PVC that resists chemicals, UV rays, fungus, and sewer gases—built to last.
- • **Certified Reliability:** Meets ASTM C1173, CSA B602 standards and UPC approved for peace of mind in any project.
- • **Effortless Installation:** Flexible design simplifies repairs, cut-ins, and upgrades—trusted by pros and municipalities alike.
- • **Versatile Compatibility:** Seamlessly connects cast iron, copper, plastic & schedule 40 steel pipes for ultimate flexibility.

## Overview

The Supply Giant 6I49x4 Flexible Coupling is a 4-inch, black elastomeric PVC pipe connector designed for universal compatibility with cast iron, copper, plastic, and schedule 40 steel pipes. Certified for underground and outdoor use, it offers leak-proof, rot-proof sealing that resists chemicals, UV rays, and sewer gases. Ideal for drain, waste, and vent systems, this coupling is trusted by plumbing professionals for its durability, ease of installation, and compliance with ASTM and CSA standards.

## Description

Supply Giant flexible couplings have found wide acceptance among sewer and Plumbing contractors and municipalities because of their quality and ease of installation. Supply Giant pipe couplings and adapters are used for all types of in-house and sewer connections: drain, waste, vent piping, house-to-main, repairs, cut-ins, conductor, roof drains and increasers-reducers. Manufacturing thousands of different flexible coupling types, Supply Giant has the right solution for most applications. Made of tough elastomeric polyvinyl chloride (PVC), the flexible couplings are strong, resilient and unaffected by soil conditions. They are also resistant to chemicals, ultraviolet rays, fungus growth, and normal sewer gases due to the inert nature and physical properties of the PVC material. Supply Giant flexible couplings are leak-proof, rot-proof and seal against infiltration and exfiltration, giving you confidence in your pipe connections. CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including Phthalates content which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www. P65warnings. ca. gov ⚠ 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: 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: 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 | B07FL4NXS2 |
| ASIN  | B07FL4NXS2 |
| Batteries Required? | No |
| Best Sellers Rank | #174,666 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,645 in Industrial Pipe Fittings |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (82) |
| Customer reviews | 4.4 4.4 out of 5 stars (82) |
| Date First Available | 10 November 2018 |
| Date First Available  | 10 November 2018 |
| Included components | coupling |
| Item Package Quantity | 1 |
| Item Weight | 1.68 Kilograms |
| Item model number | 6I49x4 |
| Item model number  | 6I49x4 |
| Manufacturer | Supply Giant |
| Manufacturer  | Supply Giant |
| Material | Polyvinyl Chloride |
| Number Of Pieces | 4 |
| Part number | 6I49x4 |
| Product Dimensions | 10.16 x 10.16 x 15.24 cm; 1.68 kg |
| Product Dimensions  | 10.16 x 10.16 x 15.24 cm; 1.68 kg |
| Size | 4 Inch |
| Style | Pack of 4 |

## Product Details

- **Brand:** Supply Giant
- **Colour:** Black
- **Item dimensions L x W x H:** 10.2 x 10.2 x 15.2 centimeters
- **Material:** Polyvinyl Chloride
- **Size:** 4 Inch

## Images

![Supply Giant 6I49x4 Flexible Coupling, 4 inch, Black - Image 1](https://m.media-amazon.com/images/I/614dXJmlRAL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***A on 30 June 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!

### ⭐⭐⭐⭐⭐ Review
*by A***N on 27 March 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.

### ⭐⭐⭐⭐⭐ Review
*by R***W on 10 March 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 6I49x4 Flexible Coupling, 4 inch, Black
- POWERTEC 4 Inch Y Fitting for 4" Dust Collection Hose, 4 Inch Dust Collection Hose Connector Fittings for Dust Collection System, 1 pack (70106)
- POWERTEC 70295-P2 4-Inch Integrated Blast Gate Clog Resistant, Anti Gap Tapered ABS Plastic Fitting for Dust Collection Systems, 2PK

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-19*