Can I drill into this cast iron waste pipe

[marc1977]

Hi,

Im moving the washing machine into the garage so need to connect the drainage hose to the waste pipe. Can i drill a hole and fit a standard connector to the caste iron pipe or will i need to replace the waste pipe with a plastic one?

 

[Masood]

You can drill into cast no problem. Use a 57mm bi-metal holesaw, go slowly, and use plenty of lubricating oil. Then attach one of these:

http://www.NoLinkingToThis/p/mcalpine-mechanical-pipe-boss-connector-black-40mm/55722.

 

[marc1977]

top man, thanks

 

[johnf]

Try using the Starett SM holesaws. Not cheap but they will drill stainless steel as well as other metals. Cheaper hole saws will struggle as we have found out before!

 

[king of pipes]

You can but I would say it's better to cut the cast 300mm above the finished floor with a angle grinder and add a 110mm x 11/2" boss pipe adaptor you can fit a rubber transion coupling from one material to the other a short length of 110mm soil and a slip coupling a good smear of silicone grease so you can slide into place add the washing machine trap plumbing job done screwfix sell all you need good luck

 

[chris watkins]

:iagree:
That would be my choice, hit a bit of silica in that cast iron & you will be drilling all day.

I am not sure those bosses can take a washing machine waste, I thought they were just for condensate connections Masood?
Have you used one before for this?


PS. Good luck on your first day tomorrow Mas