A sub-contract civil & construction company are using AKO Pinch Valves from the VF range in sizes DN250 & DN300 within their ground granulated blast-furnace slag (GGBS) application. This is a cement based media; it’s main use is in concrete and it is a by-product from the blast-furnaces to make iron.
In this particular application, two pinch valves are used in conjunction with one another. Depending on the line that is being delivered on, one pinch valve is fully open whilst the other is closed.
Media passing through the valve: GGBS
Temperature of media: up to 50 degrees C
Pressure of media: up to 3.5 BAR
Amount of cycles: 6 cycles per month
No degree of vacuum is being used.
Pinch Valves are connected up to a permanent compressed air line.
The company operating the Pinch Valves have confirmed that they are satisfied with the products, that the valves for GGBS are easy to operate and that they are working as anticipated. The life of the rubber sleeve is currently unknown as they are yet to be replaced after a few months. We estimate that the sleeves will have a long and healthy lifetime if our operating pressures are adhered to.
See the typical pinch valve failures and how to prevent these by operating a pinch valve correctly.