This configuration can be used when there is no alternative other than to take the waste down through a solid floor to gain access below to the soil pipe, for example, in a block of flats or multi storey buildings.
 

Consists of:

• STW85CPL – 45mm long plastic waste flange, 85mm in width (as STW8B-95)

• Backnut

• Black rubber washer

• 18” Inlet leg, 1½” diameter

• ASC10 – Basin / sink trap with 75mm water seal

• (The ASC10 basin / sink trap is illustrated although any similar type of trap could be used)