The 110mm Black Soil Boss Pipe Socket/ Spigot allows the connection of up to 3 separate waste pipes to the soil system. The boss pipe has 1 open & 2 closed bosses to use the open boss fit the appropriate adaptor which will allow a 32mm 40mm & 50mm waste pipe to be connected to the soil stack. To fit waste pipes to the closed bosses drill them out using a 50mm
- 57mm hole cutter fit the appropriate boss adaptors to allow 32mm 40mm & 50mm waste pipes to be connected to the soil stack. The soil boss pipe has a spigot at 1 end which should always form the lower joint.