Festo has launched a new pneumatic pinch valve – the VZQA – that provides reliable control and shut off in food and drink production processes. The valves are durable, energy efficient, easy to service and flexible, thanks to their simple construction, and as a result provide a cost effective alternative to conventional valves such as diaphragm and ball valves.
There are two versions of the pinch valve available: a normally open (N/O) version for media pressures from 0–4 bar and a unique, normally closed (N/C) version for media pressures from 0–6 bar. The high performance valves are extremely easy to service. The pinch valve’s sealing cartridge can be changed in just a few minutes in four simple steps and without special tools, and they can be cleaned easily in situ thanks to their full media passage flow and very little dead space. The sealing cartridge is available in EPDM, NBR, EPDM-FPA and silicone to suit a wide range of demanding applications and media.
Made from aluminium or stainless steel, the pinch valves prove themselves in even the most challenging environments and the internal parts offer the same durability against aggressive media. Thanks to a patented sealing cartridge, the valves can withstand the very high demands in continuous daily operation, whether abrasive, corrosive, highly viscous or neutral media is used.