I have new 32mm going into slightly larger 1.25" then into something over 40mm (possibly imperial) from a basin and joining with bath waste 40mm into something slightly larger and meeting in a 2.25" plastic pipe. Most of this was from 1978.
These are all OD. What do I actually have and what can I replace? Is it OK to join a 32mm basin waste to a 40mm bath waste into a 50mm combined waste without anti-syphon traps?
The elbow for the bath waste is angled up about 45 degrees. The bath U-bend ends up rather high. It would be nice to change this to reduce the climb up into the bath (I'm changing the bath panel anyway).
These are all OD. What do I actually have and what can I replace? Is it OK to join a 32mm basin waste to a 40mm bath waste into a 50mm combined waste without anti-syphon traps?
The elbow for the bath waste is angled up about 45 degrees. The bath U-bend ends up rather high. It would be nice to change this to reduce the climb up into the bath (I'm changing the bath panel anyway).