Name | Pneumatic pinch valve |
---|---|
Type | VN... ref: 2900 |
Maximum product temperature: | (depending on the material of the hose) |
NR | +80º C |
NW | +70º C |
NRE | +80º C |
VI | +100º C |
EPDM | +120º C |
Ambient temperature | -20° C – +70° C |
Procces pressure: | |
DN-13 y 20 | +6 bar |
DN-25 – DN-125 | +4 bar (Under request higher pressures) |
Control pressure | +2.5 bar over process pressure |
Difference in pressure | +2.5 bar depending on the model |
Weight | 0,27 Kg |
Materials | |
Body | DN-13 – DN-125 Aluminium, Stainless Steel 1.4571 or POM |
DN-32 – DN-125 Aluminium, Stainless Steel 1.4571 | |
Proccess connection | DN-13 – DN-125 Aluminium, Stainless Steel 1.4571 or POM |
DN-32– DN-125 Aluminium, Stainless Steel 1.4571 | |
Elastic hose | Natural gummy resistent to abrasion (NR) |
Food white gummy (NW) | |
Natural gummy resistent to abrasion (NRE) | |
Viton (VI) | |
EPDM (EP) |
- Productos
- Control of solids
- VN-RR
Intended use
Model with proccess connection Thread-Thread.
The pneumatic pinch valves VN with the elastic hose are to be used to control the transport or distribution for dusty and powdery, granulated and grainy bulk goods or viscous or liquid products.
Function
Inside the valves there is an elastic hose made of Natural gummy that is squeezed either by compressed air or by water pressure. The existing solids are encolsed due to this compression and when there is no pressure in the valve, the hose opens and returns to the original shape allowing the flow of product.
There are models with diameters from 13 to 125 mm and with many different proccess connections like flange-flange, racor-racor, tube-tube or combinations of them and with the hose made of Natural gummy resistan to abrasion or Food white gummy depending on the application.
Mechanical connection
The mounting of these models is made by insterting the valve between a pipe with the thread connections.