I'm currently updating my kitchen and bathroom plumbing as it's not been touched since it was built around the 1950's and is quite dilapidated - it's mostly lead pipe and some has already broken. I live on the ground floor of a block of flats. Currently both the kitchen sink and bath waste pipes are connected to what I assume is some sort of vent pipe that dissappears into the wall. However, I've been told that I don't need to connect into these vent pipes and there are modern anti-syphon alternatives...? Can anyone let me know what these are and if they are as effective? I'm new to plumbing and can't afford to get this done professionally so hope someone can help...
