Some advice please
Re-doing 2 bathrooms in a large 1950s house with gravity feed system etc. All the old sanitary ware has been thrown out and new purchased. My wife choose mixer taps for the 2 basins, bidet and bath --- although following an earlier mistake ( ), we were careful to buy mixers suitable for low pressure systems (0.1 bar).
Having lifted the floorboards and traced all pipework, I now realize upstairs cold is fed from the mains and hot from the tank. While this was fine when we had separate taps on all the old sanitary ware, it's no good with these mixers.
It would be relatively easy to switch the upstairs cold pipe work to use the cold water header tank since the 2 power showers already use hot & cold from their hot & cold tanks...or should I just fit check valves everywhere (I don't like the idea of them being under the new floor where I can't get to them.).
Related to this, the old cast iron bath, which we're keeping, has a 22mm hot feed and a 15mm cold feed --- understandable when it had separate taps and cold was from mains and hot from tank. But if I switch all cold to use the header tank, is it still ok to leave this 15mm feed to the bath?
All advice gratefully received. Many Thanks
Paul
BTW: A plumber installed our kitchen sink with a mixer about a year ago...cold from mains, hot from tank, no check valves. When you put hot and cold on, cold not only goes into sink but also back up hot water pipe I guess I need check valves here as well.
Re-doing 2 bathrooms in a large 1950s house with gravity feed system etc. All the old sanitary ware has been thrown out and new purchased. My wife choose mixer taps for the 2 basins, bidet and bath --- although following an earlier mistake ( ), we were careful to buy mixers suitable for low pressure systems (0.1 bar).
Having lifted the floorboards and traced all pipework, I now realize upstairs cold is fed from the mains and hot from the tank. While this was fine when we had separate taps on all the old sanitary ware, it's no good with these mixers.
It would be relatively easy to switch the upstairs cold pipe work to use the cold water header tank since the 2 power showers already use hot & cold from their hot & cold tanks...or should I just fit check valves everywhere (I don't like the idea of them being under the new floor where I can't get to them.).
Related to this, the old cast iron bath, which we're keeping, has a 22mm hot feed and a 15mm cold feed --- understandable when it had separate taps and cold was from mains and hot from tank. But if I switch all cold to use the header tank, is it still ok to leave this 15mm feed to the bath?
All advice gratefully received. Many Thanks
Paul
BTW: A plumber installed our kitchen sink with a mixer about a year ago...cold from mains, hot from tank, no check valves. When you put hot and cold on, cold not only goes into sink but also back up hot water pipe I guess I need check valves here as well.