Heavy duty discharge and suction hoses are constructed from a rigid PVC spiral encased in flexible PVC. Typical Applications: Heavy duty suction applications in agriculture, industry and construction. Suitable for the conveyance of water, slurry, sewage, some solids, granules and gases. Chemical resistance: Resistant to most oxidising and reducing agents, diluted acids and alkalis, for further details please contact us. Vacuum: 711mm Hg = 94% at 20 degrees C. Features: Weather resistant, durable, smooth bore, good abrasion, rot and chemical resistance, good crush and kink resistance.