The components are made of carbon-graphite which provide improved lubrication in most environments, and are ideal for pumping liquids with poor lubricating qualities, strong chemicals that attack metals, and air, vacuum, combustion products and gasoline vapours. The material is also chemically resistant and compatible with FDA food and beverage regulations. Carbon-graphite has a low wear rate running in both gas atmospheres and low viscosity liquids and carbon graphite vanes can withstand the rubbing of the vane tip against the housing bore and the rubbing of the side of the vane against the slots in the rotor. The carbon graphite end plates are pressure tight and dimensionally stable so that they can make a close clearance seal with the rotor and vanes. They also withstand the rubbing of both the vanes and rotor. Metallized Carbon’s carbon-graphite vanes, rotors, and end plates are used in dry running applications such as automotive anti-smog pumps and gasoline vapour pick up pumps, breathable air pumps and vacuum pumps. In-liquid applications include vending machine beverage pumps, fuel and liquid chemical pumps, and medical liquid pumps.
“With dimensionally stability and high strength to weight ratio, the components are available in several grades of Metcar’s proprietary carbon/graphite material,” said Matthew Brennan, COO of Metallized Carbon. “Our engineers assist in selecting the optimum grade based on application, environment, housing materials, rpm and other parameters.”