VN-RR

Control of solids
Pneumatic pinch valves with elastic hose

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.

Dimensions

Approximate measures given in mm.

Technical data


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)