Flo Plast Double nozzle trap (Dia)40mm. Part of the drainage system this double nozzle trap from Flo Plast is made from hard-wearing polypropylene & has a compression fitting type. It's suitable for plastic pipes to bs 5254 bs 5255 bs en 1455 & bs en 1451 & copper pipes to bs 659 bs 2871 & bs en 274.