PROKOSCH Tanker Pinch Valve, Model 520


Available in material combinations of aluminum, cast iron and stainless steel.

  • Direct acting
  • Max. operating pressure 6 bar
  • Nominal diameter DN80/DN100
  • Min. temperature -20 °C
  • Max temperature +80 °C
  • Inlet: TW-flange DIN 28460
  • Outlet: TW-flange DIN 28460

You can download the data sheet here.

Short Description

The pneumatically operated PROKOSCH pinch valves of the 520 series are specially designed for use on pneumatic conveying systems, even with abrasive media. They are characterized by their robustness, the use of fewer individual parts and space-saving elements as well as their maintenance-free design. Because the valve can be disassembled without special tools, periodic replacement of the sleeve is possible with little effort.

The free cylindrical passage reduces flow resistance to a minimum. The housing is made of light metal with generously dimensioned wall thicknesses and has been tested at the factory with test pressures above 24 bar.

Simple design and operating principle – the body is pressurized and the flexible sleeve is compressed inside the body. As soon as the pressure in the housing is released, the sleeve is also not loaded and the valve is open again.

On request, the sleeve can also be supplied in white food grade quality and the flanges in aluminum or stainless steel. Special designs with regard to the materials used, automation and the construction are possible after consultation.

DN PN LW L / H D / K d x i
80 (3″) 6 78 280 / 81 154 / 130 M10 x 8
100 (4″) 6 97 280 / 91 174 / 150 M12 x 8

Please download data sheet for detailed dimensions and weights.

Product configuration – most applications are covered by our standard designs. They can still be supplemented with a selection of options to suit the application. In addition, we can offer customized special designs for demanding requirements.

Standardausführungen Code
Aluminum housing with cast iron flanges AG
Aluminum housing with aluminum flanges AL
Aluminum housing with nickel-plated aluminum flanges AN
Aluminum housing with nickel-plated stainless steel flanges AV

Other material combinations available upon request.

Code Recommended Application
AG abrasive solids application
AL Solids application
AN Food application
AV Abrasive food application
Sleeve Code
Standard, NR (Black) NS
Food grade, NR (White) NW

Other cuff materials available upon request.

All pinch valves are manufactured in our factory in Germany. Our employees and the ISO9001 certified quality management system, a control and measurement system from supplier to material receipt to final inspection ensures the highest quality. Furthermore, works certificates according to EN 10204 2.2 as well as 3.1, are available on request.

Model Key: //–

Examples: 520/80/AG-NS, or 520/100/AV-NW

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