Automated cleaning and reduced downtime always have been primary drillpressreview benefits of mix-proof valves, as well, and more dairy processors are beginning to take advantage of the technology thanks to greater acceptance by regulators. "Mix-proof technology has been around for awhile, but the PMO aspect is relatively new," says Mark Ream, business development manager at Alfa Laval, which counts the Tri-Clover brand among its valve offerings. A cleanability hierarchy has been created to accommodate a broad range of products, from fluid milk to sticky, viscous products. drillpressreview Alfa Laval''s spiral clean technology represents the company''s state-of-the-art CIP for drillpressreview sanitizing the inside of the valve and plug area.

Iron-base alloys, the most widely used hardfacing materials, combine versatility with moderate cost. They achieve wear resistance by forming carbides and martensite, a hard matrix structure that forms on quenching and toughens with tempering. Pearlitic alloys, usually containing less than 0.30 percent carbon, are comparatively soft and ductile.Nickel-base alloys resist corrosion and heat better than iron-base alloys, They come in three types, depending on the hard phase (boride, carbide, or Laves) that forms on cooling, In boride-containing alloys, large amounts of chromium borides provide wear resistance.Cobalt-base alloys provide more high-temperature corrosion resistance than iron-base and nickel-base grades. Carbides or Laves-phase give wear resistance.

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