AVM's diaphragm valves for vacuum systems feature PTFE or EPDM diaphragms with reinforced structures to withstand negative pressure, preventing collapse in vacuum conveying and distillation processes. The valve body, constructed from 316L stainless steel or ductile iron, ensures airtight sealing with zero leakage, compliant with ISO 2852 and ASME B16.5 standards. Ideal for pharmaceutical vacuum drying and chemical distillation, they offer reliable operation in vacuum environments down to 0.1 mbar.