![plumbing - Why did my plumber use a cast iron to plastic coupling in one location, but not in the other? - Home Improvement Stack Exchange plumbing - Why did my plumber use a cast iron to plastic coupling in one location, but not in the other? - Home Improvement Stack Exchange](https://i.stack.imgur.com/ibeCR.jpg)
plumbing - Why did my plumber use a cast iron to plastic coupling in one location, but not in the other? - Home Improvement Stack Exchange
Replacing cast iron with ABS, no hub coupling or donut? | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
![Fernco 1056-43W Reducing 4" x 3" Flexible Pipe Coupling Socket Plumbing Plastic PVC ABS, Cast Iron, Lead in White - Walmart.com Fernco 1056-43W Reducing 4" x 3" Flexible Pipe Coupling Socket Plumbing Plastic PVC ABS, Cast Iron, Lead in White - Walmart.com](https://i5.walmartimages.com/asr/763d33ad-aeee-4bb4-ac46-d852aec5e686.5a7644418c92f0e71c8ba09df1258d22.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Fernco 1056-43W Reducing 4" x 3" Flexible Pipe Coupling Socket Plumbing Plastic PVC ABS, Cast Iron, Lead in White - Walmart.com
![The Plumber's Choice Shielded 4 in. Cast Iron Transition Coupling Connects Copper H-38666 - The Home Depot The Plumber's Choice Shielded 4 in. Cast Iron Transition Coupling Connects Copper H-38666 - The Home Depot](https://images.thdstatic.com/productImages/af4ea56a-61e8-4512-86e9-5d0ad1e5e716/svn/black-the-plumber-s-choice-rubber-fittings-h-38666-1f_600.jpg)
The Plumber's Choice Shielded 4 in. Cast Iron Transition Coupling Connects Copper H-38666 - The Home Depot
![Fernco 4 in. Service Weight Cast Iron Hub x 4 in. Sch. 40 PVC Compression Coupling P44U-405 - The Home Depot Fernco 4 in. Service Weight Cast Iron Hub x 4 in. Sch. 40 PVC Compression Coupling P44U-405 - The Home Depot](https://images.thdstatic.com/productImages/53700bda-f331-4946-943b-6661f7bfdc3a/svn/black-fernco-pvc-fittings-p44u-405-64_600.jpg)
Fernco 4 in. Service Weight Cast Iron Hub x 4 in. Sch. 40 PVC Compression Coupling P44U-405 - The Home Depot
![Fernco 1056-43W Reducing 4 x 3 Inch Flexible Pipe Coupling Plumbing Plastic PVC ABS, Cast Iron, Lead in White - Amazon.com Fernco 1056-43W Reducing 4 x 3 Inch Flexible Pipe Coupling Plumbing Plastic PVC ABS, Cast Iron, Lead in White - Amazon.com](https://m.media-amazon.com/images/I/51LK6YZUdwL.jpg)
Fernco 1056-43W Reducing 4 x 3 Inch Flexible Pipe Coupling Plumbing Plastic PVC ABS, Cast Iron, Lead in White - Amazon.com
![plumbing - Cast Iron to ABS - exterior of cast iron not smooth - how to stop leak at coupling? - Home Improvement Stack Exchange plumbing - Cast Iron to ABS - exterior of cast iron not smooth - how to stop leak at coupling? - Home Improvement Stack Exchange](https://i.stack.imgur.com/8p835.jpg)
plumbing - Cast Iron to ABS - exterior of cast iron not smooth - how to stop leak at coupling? - Home Improvement Stack Exchange
![ABS Toilet Flange Into Cast Iron Pipe | Terry Love Plumbing Advice & Remodel DIY & Professional Forum ABS Toilet Flange Into Cast Iron Pipe | Terry Love Plumbing Advice & Remodel DIY & Professional Forum](https://terrylove.com/images/replace_lead_bend.jpg)
ABS Toilet Flange Into Cast Iron Pipe | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
![Replacing cast iron with ABS, no hub coupling or donut? | Terry Love Plumbing Advice & Remodel DIY & Professional Forum Replacing cast iron with ABS, no hub coupling or donut? | Terry Love Plumbing Advice & Remodel DIY & Professional Forum](https://terrylove.com/images/pic/fernco-donut-4-inch.jpg)