APPLICATION: Suction and delivery of abrasive material such as dry cement, grains, flour, powders and sand. LINING Black Smooth, antistatic rubber to withstand passage of highly abrasive material. REINFORCEMENT Multiple layers of synthetic cord plus a single steel helix, giving a minimum bend radius of 6x bore size. COVER Corrugated for greater flexibility. Tough weather and abrasion resistant. WORKING PRESSURE – VACUUM 10 bar – 0.85 bar. SAFETY FACTOR 3.5 : 1