Dowdens Distributors For Supavac Pumps Global Leader in Air Operated Slurry & Solid Waste Pumps Dowdens was recently appointed as an authorised SupaVac Pumps distributor. SupaVac is the global market leader in air-operated ultra-tough vacuum pumping units capable of transferring any flowable material across a wide range of mining, oil & gas, FPSO & tanker …