The Mcalpine ST28M compression connector is recommended for linking GW6 urinals to 40mm pipework. It is compatible with the following GW6 urinals:
GW6 Karoo Compact Ceramic Waterless Urinal
GW6 Sahara GRP Waterless Urinal
GW6 Tabernas Waterless Urinal Trough
GW6 Mini Trough Waterless Urinal
GW6 Accona GRP Waterless Urinal Trough