ideal isar 30100 white plastic pipe?

Hi yes it would. you could always put in a washing machine trap just for the condensate pipe

Brian Emian Plumbing
April 2011

I will have a washing machine waste going into the sink waste pipe via a spigot(?), can I run the condensate pipe into another one of these? It would be below the sink level, would that cause a problem? sink waste going back up the condensate pipe?

TJ
April 2011

its a condensate pipe and not an overflow its very important. you can run it into a mains drain or you can buy a small soakaway that you fill with limestone chippings. you must not let it drain to the ground.
your most important consideration must be frost protection so run it outside in 40mm pipe and protect it from freezing or your boiler will fail at the coldest time of the year. hope that helps

Brian Emian Plumbing & Heating norfolk
April 2011