Used EDWARDS QMB500 #9137969 for sale

EDWARDS QMB500 is a two-stage oil-sealed, dry scroll pump designed to deliver high ultimate vacuum without oil backstreaming. This pump is designed to provide an economical solution for many general laboratory and process applications. It operates at an inlet rated capacity of 15 m³/hr and ultimate vacuum of 5 x 10-3 mbar. EDWARDS QMB 500 features a long life double-sided mechanical seal between the compression space and the motor, and an additional seal between the compression space and the atmosphere. Its robust design ensures reliable operation and leaktight shut-off. The pump is constructed of highly corrosion-resistant stainless steel and features a monoblock "three in one" design, combining the housing, rotating parts, and vacuum flange in a single unit. The pump has a maximum speed of 4500 rpm and performs best when operating at a nominal speed of 1500 - 4000 rpm. It is designed to retain its performance in a wide range of temperatures and its precise air-bleed system ensures optimum behavior in all operating conditions. Additionally, the pump has a silencer/gas-ballast valve to reduce noise, minimize oil consumption, and increase performance, as well as an adjustable diaphragm to adjust the compression space volume. The internal condensation removal drain valve prevents condensation water from escaping the compression chamber. QMB500 is easy to operate and maintain, as it features a simple two-position gas ballast lever and a vacuum gauge for proper setup and monitoring of vacuum level. The oil seal chamber gives access to the oil for ease of maintenance, and the "oil-seal-less" shaft design makes for a long service life of the pump. Finally, the pump is designed to be a quiet performer, producing only 58 dB when operating at full capacity. All in all, QMB 500 is an excellent choice for many specialized laboratory and process applications requiring a low ultimate vacuum and reliable performance.