Rietschle Thomas DLR 250 (often referred to as Elmo Rietschle DLR250) is an industrial, oil-free clone compressor/pump pump (claw compressor/vacuum pump) from German Elmo Rietchle (part of Ingersoll Rand). The DLR 250 series is characterised by its dry-claw technology, which produces contact-free compression without the need for lubricating oil in the pump chamber. This ensures 100 % oil-free and clean air for the process, extremely low maintenance costs and continuous operation. It is commonly used as a central source of depression or compressed air in printing works (for sheet feeding and suction tables), packaging facilities, vacuum hold and material handling.