This branch incorporates an access point that allows the soil pipe to be rodded in either direction. it is often sited where at the point on the external wall where an internal soil pipe connects to the outside soil and vent pipe.
To use the access point, simply remove the cap by unscrewing it from the threaded projection on the fitting. This will release any blockage so it is always advisable to stand aside at this point
The top two connections of the branch are ring seal sockets, the bottom of the branch is a spigot that can be fitted into another ring seal or solvent weld socket.