The LR1A Series of Liquid Ring Vacuum Pumps provide a single-stage design and curved blade impellor with reinforcing rings for improved ruggedness, reducing noise and vibration. Capable of handling wet or dry gases with a high tolerance to liquid carry over, the LR1A Series has an enhanced bearing design enabling reduced internal clearances for improved efficiency. Pumps are available in cast iron and 316 stainless steel construction as standard with other materials and corrosion-resistant coatings available. All are tested to DIN 28431:1987and are available as part of ATEX Category 1 and 2 T4 systems. The LR1A pumps are bare-shaft machines and can be supplied as part of a standard package, incorporating electric motor, base-plate and seal liquid recovery system, suitable for once through, partial or total recirculation. Custom-engineered packages are also available.