Adam-Opel-Str. 5
65468 Trebur-Astheim, Germany
Phone: +49 (0) 6147-9159-0
Fax: +49 (0) 6147-9159-59
13 Alvis Way
Royal Oak Trading Estate
Daventry, Northants NN11 8PG
Great Britain
Phone: +44 (0) 13 27 31 27 47
Fax: +44 (0) 13 27 31 25 65
sales@ako-valves.com 
www.pinch-valve.com
Contact for sales in Great Britain and Ireland.
Alb. Klein Ohio LLC
8275 Estates Parkway
43064 Plain City OH, USA
Phone: +1-614-873 89 95
Fax: +1-614-873 89 96
Data sheets:
Series VA Stainless steel.pdf (1.5 MB)
Flange dimensions+Sleeve qualities.pdf (250 kB)
Operating Instructions:
AKO air operated Pinch Valves with Flange Connection - VA Series
The air operated pinch valves of the VA series are available in the nominal diameters of DN040 to DN150. Nominal diameters DN200 and DN250 are available on request.
They are designed with a flange connection complying with DIN EN 1092 (PN10/16) as standard. On request, the air operated pinch valves of the VA series can be made with a flange connection complying with ANSI B 16.5- 150lbs, if required.
Structure of VA series:
The structure of the VA series air operated pinch valves encompasses the sleeve - the essential part of every pinch valve - a body and two flanges.
The pinch valve sleeve is positioned in the centre of the VA series air operated pinch valve's body; both of its ends are pressed in by the flanges, thus forming a compact unit.
Function of AKO Pinch Valve VA series:
The VA series air operated pinch valve is closed by differential pressure of 2-3 bar being fed via the medium/operating pressure (depending on the elastomer grade) into the pinch valve body. As soon as the pressure supply is interrupted and the pinch valve body bled, the pinch valve sleeve opens again completely because of its enormous rebound resilience.
Only the sleeve and the two flanges are positioned in the product flow (contact with the operating medium) of the VA series air operated pinch valve.
Materials of AKO air operated Pinch Valves VA series:
A selection of 12 different elastomer grades for the sleeve (natural rubber, food quality rubber, high temperature rubber, neoprene, EPDM, EPDM food quality, viton, silicone, nitrile, nitrile food quality, butyl and Hypalon) ensures that the VA series air operated pinch valves from AKO have a very wide and practically unrestricted field of application.
The body and both flanges of the VA series air operated pinch valves are made in stainless steel AISI 1.4404. The body and flanges are electro-polished as standard.
Maximal operating pressures Pinch Valves VA series:
DN040-DN125: 6 bar
DN150: 4 bar