1 OTAL® foot pump made of PP OTAL® foot pumps with delivery tubes made of PP, resistant to weak acids, alkalis and detergents. 2 OTAL® foot pump made of PVDF OTAL® foot pump with delivery tubes made of PVDF, particularly for acids and alkalis, not for heavily oxidising acids and alkalis. Resistant to chlorine bleach. With its special material properties, PVDF has an even better chemical resistance than PP. 3 OTAL® foot pump made of stainless steel OTAL® foot pump made of stainless steel (1.4301), with delivery tubes made of stainless steel for liquids that are not easily combustible in Hazard Category AIII (VbF). With universal bungs made of soft PVC and three bungs made of LDPE (48 – 56 mm Ø, 54 – 62 mm Ø and 60 – 68 mm Ø). 4 OTAL® foot pump with hose and stopcock OTAL® foot pump with hose and tap with delivery tubes made of PP and a 1.5 m discharge hose made of PVC with stopcock made of PP/PE Ø 10 mm.