Busch Vacuum Pumps and Systems launched the Dolphin LM/LT series of liquid ring vacuum pumps. The redesigned pumps are single-stage vacuum pumps for the rough vacuum range from atmospheric pressure to 100 Torr ultimate pressure. They are also available in two-stage versions and cover the vacuum range from atmospheric pressure to 25 Torr. Thirteen sizes are available. Featuring a modular design and integrated flow channels, the pumps are extremely compact. The optional motor pedestal eliminates the need for base frames, since the NEMA premium-efficiency motor is directly flange-mounted. The new seal concept with mechanical shaft seals, made of FKM or FFKM, depending on the pumping medium, ensures a long life cycle. The pumps are said to be ideal for processing foodstuffs, chemicals, pharmaceuticals, oil and plastics.