Description
VSB Series | Nash Dry Screw Vacuum
Nash VSB dry screw vacuum pump models offer a robust casing and rotor that operates with low noise levels and is simple to service and maintain. Reliable sealing arrangements prevent bearing and lubricant contamination, reducing frequent maintenance. Nash pumps are known as tireless workhorses, designed to stand up to the rigorous, non-stop demands of industrial environments. The VSB Series offers a remarkably simple, yet sophisticated design, that offers safe and reliable performance with a non-contacting screw design.
Easy Maintenance & Quiet Operation
Dry screw vacuum pumps require no water or oil for sealing or lubrication in the vacuum stages. Consequently, these dry vacuum systems eliminate effluent generation, pollution, and high treatment costs.
Wide Operating Range
VSB dry screw models operate at any pressure between blank of and atmospheric pressure. Pumping capacities are virtually limitless when paired with a high vacuum booster pump.
Reliable Performance
The VSB Series low rotational speed ensures smooth and robust operation. Engineered to offer higher discharge pressure handling capabilities than vertical designs, allowing for more process time. With higher vapor and liquid tolerances, dry screw vacuum pumps have a long service life.
How Dry Screw Pumps Work
A dry screw vacuum pump consists of two parallel, non-contacting helical screw-shaped rotors rotating synchronously at high speeds via precision gears. They rotate in opposite directions, and in so doing, trap a quantity of gas at the inlet and transport it towards the exhaust port and into the exhaust channel. The walls of the stator and the special shape of the intermeshing screws form the compression chambers or pockets that transport the gas.
Technical Data
- Suction Capacity: up to 1,500 ACFM (up to 2,500 m3/h)
- Vacuum Range: to 0.02 Torr (to 0.03 mbar)
*Performance data is for illustrative purposes. Please consult with a Nash Engineer or Sales Representative for pump sizing and specific performance data.
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