How To Clean Old Cast Iron Drain Pipes

Further up on the vented part above the toilet connection you may find the back has totally rusted through. Making New Drain Connections to Old Cast Iron Drain Piping. Compared to hydro jetting it is a much safer method.

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Wait ten to fifteen minutes for the baking soda and vinegar to foam and begin acting on the slime.

How to clean old cast iron drain pipes. At upper left a black plastic hub fitting has been used to connect the 4 copper drain to the cast iron drain line. 13500 to 18500 per foot. These cast iron pipes have a bell or hub on one end and the smaller end of another pipe fits into it.

The cast iron hopper at the top of the drain pipe has cracked and water is seeping down the wall. Lay a bead of silicon caulk around the donut it will spread out and need to be cleaned up around the outside once you are done hammering the donut in Hammer the donut in using a large hammer or side of a small hammer if in an enclosed space between studs. The joint is then packed with a product called oakum.

The rust buildup is approximately 125 feet from a cleanout located in the 2 line at the point it connects to lead pipes. If the pipe were structurally sound these devices could easily solve the cleaning issue but we often see old cast iron pipe in a less than pristine condition. So you may find the back of it is rusted a lot more.

Cabling uses a plumbing snake and cables to manually clear clogged pipes. Vulnerability Cast iron like all metal rusts when exposed to water and oxygen. That makes this approach risky especially when approaching 30000 psi.

Spray the seam between the plug and the inside of the cast iron pipe. We then use a high pressure water jetted to clean the pipe. Pour half a cup of baking soda followed by half a cup of vinegar down the affected drain.

Clean buildup from galvanized water pipes with water softeners but remember water softeners contain salt which corrodes galvanized piping. The traditional method used most of the time to clean cast iron pipes is a drain snake with cable and blades. Tighten one 18-inch pipe wrench onto the square nut on the top of the plug another around the drain pipe.