Everest offers expo series twin lobe positive displacement roots blowers having unmatched quality and performance. These have been specially designed for continuous duty applications, demanding constant flow at varying discharge pressures, such as etp, pneumatic conveying, etc. Complete package units are shipped with all accessories. The outboard position of the rotor bearing allows atmospheric venting between the compression chambers and the bearings, which keeps the gears, and bearings cool, and prevents contamination of compression chamber and air, making delivery 100 per cent oil free. Compact design, heavy-duty bearings and accurately machined tolerances allow high-speed operation, increasing capacity for relatively low unit weight. Standard design and construction features include integral sg iron rotor shaft assembly, relatively low vibration and noise levels, relatively low pulsations, efficient cooling, isolated bearing chambers, rated for continuous duty operation, compact design, capability to take over pressures and surge loads, 100% oil free air delivery, factory engineered and guaranteed, superior product, alloy steel hardened and ground timing gears, anti friction bearings, rotary oil sealing, improved base frame design with built-in discharge silencer for low noise operation. Package unit consists of blower, common blower and motor base frame with belt guard, safety relief valve, pressure gauge with ball valve, suction filter assembly, suction and discharge silencer, blower and motor pulley, non return valve with companion flange, first oil fill, vee belts and foundation anchor bolts.