One of the largest foundries in Great Britain specialising in the processing of aluminium has used pinch valves from AKO Armaturen for more than 20 years to control the supply of sand for the production of casting moulds. The company uses pinch valves from the VF & VMC series with abrasion-resistant sleeves made out of natural rubber.
In order to cast the aluminium in the desired form, special sand casting moulds are required into which the liquid aluminium is poured. The casting moulds are produced from sand mixed with binding agent and are then destroyed after the casting process in order to reach the object that has been cast.
The pinch valves from AKO are used to control the supply of sand for the production of new casting moulds and as quick exhaust valves in the conveying containers. The pinch valves are either opened to supply sand for the production of the casting moulds or closed to shut off the supply of sand to certain sections of the pipeline. As required, the pinch valves used to fill the funnels are either permanently open, permanently closed or complete up to 300 opening and closing cycles per day.
Alongside the pinch valves from AKO, other types of valves such as ball valves, butterfly valves or knife gate valves are also used depending on the application. According to the production manager at the factory, the company is considering completely replacing some types of valves with the valves from AKO Armaturen “due to the reliable operation and long service life of the installed pinch valves”.
Sand mixed with binding agent
Opening and closing cycles:
Up to 300 per day
Experience with pinch valves:
More than 20 years
Nominal size: DN 25, DN 80, DN 100
Series: VMC & VF
Connections: Internal thread / flange, stainless steel and aluminium
Sleeve: Natural rubber, abrasion-resistant
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