For pumping highly viscous products, there is only one brand of Hygienic diaphragm pumps to offer. The Murzan AODD pump has the highest sanitary ratings and is offered here with one of our bespoke trolleys and suction wands. Pumping congealed waste cooking oil at high temperature from a peanut roaster into an IBC for disposal. The laminar flow path and oversized valve clearance means this brand can handle higher viscosities than other AODD Brands.