The Brilliant Pinch Valve Modular System! The New AKO VMC Type.Valves are the ideal solution for isolating and regulating abrasive, corrosive and fibrous products. The Pinch Valve is being used more and more as an isolating valve or regulating valve for emulsions, sludges, dusts, gaseous materials, compressed air, powder, granulates, pellets etc.
The new air operated Pinch valves of the VMC series are based upon a four-part composition, including the pinch valve housing, a pinch valve elastomeric sleeve and two connecting covers. The pinch valve elastomeric sleeve is centered in the housing and clamped at both ends with the connecting covers.
Function and models of Air Pinch Valve:
With a differential pressure of only 2-2.5bar into the housing, the special elastomer Pinch Valve sleeve is folded into a lip-shape and Seals/shuts off the valve passage. The multi-functional modular design allows a flexible exchange of the two available housing in aluminum or stainless steel, and in addition a variety of different end connection types.
The connection options range from an internal thread model (DIN / NPT), a flange (DIN / ANSI), a weld-on end (DIN 11850) connection, ranging through to various aseptic and hygienic clamp fittings (Tri-clamp) and threaded Sockets (threaded spigot) according to DIN 32676, DIN 11851, DIN 11864 and DIN 11853.
This variety of different end connection options and a choice of 12 different qualities of the elastomer Pinch Valve sleeve provides a very broad and almost unlimited field of applications of the Air operated pinch valves Series VMC.
Furthermore, the duration time for the defective Pinch Valve sleeve has been reduced enormously, compared to membranes or seat seals. In addition, the air operated Pinch Valve of the new VMC Series is a very cost effective shut-off valve solution, compared to Ball valves, Butterfly valves and diaphragm valves. Due to its simple function and the very simple operation, additional and expensive actuators are not needed.
The new air operated VMC Pinch Valves have all been implemented with an elliptical shape housing control room. The elliptical control room reduces the consumption of air volume with each closing process by up to 40% compared to conventional circular control rooms and thus reduces the energy consumption enormously. At the same time the elliptically shaped control room provides a reduction of the Pinch Valve opening time by up to 50%. Faster opening times have a positive effect on the wear of the Pinch Valve sleeve, especially for applications with abrasive and corrosive media.
The VMC Pinch Valves can be used in specific and verified conductive atmospheres in hazardous EX Zones 1, 21 and 2, 22.
The new VMC air operated Pinch Valves meet all requirements and standards of the European Directives specifications eg PED 97/23/EC.
The new VMC Pinch Valves could be also used in vacuum conveying systems, however care must be taken by plant operators on a vacuum compensation.
For particularly critical applications where a saftey closed position is required, the new air operated VMC Pinch Valves can be controlled with the AKO safety arrangement, and if required an extra air reservoir tank.
For more information about the new VMC series and the vacuum compensation please do not hesitate and contact the manufacturer AKO Armaturen & Separations GmbH.
TEL : +49 / 61 47 – 91 59-0
FAX : +49 / 61 47 – 91 59-59