Two-stage hot steam vacuum pump used in the medical industry for evacuating sterilization devices comprises membranes, inlets and outlets of pump chambers joined by lines and having non-return valves and a control unit

摘要

Two-stage hot steam vacuum pump comprises membranes (1.4, 2.4), inlets and outlets of pump chambers joined by lines and having non-return valves (1.5, 1.6, 2.5, 2.6) and a control unit with a non-return valve arrangement having valves which are 30 % lighter than the valves of the non-return valves. Preferred Features: The non-return valve arrangement comprises a control valve at the start and at the end of the control line. The pump chambers lie next to each other and the control valves are arranged in neighboring regions of the pump bodies (1.3, 2.3).