PROKOSCH Pinch Valve, Model 500


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

  • Direct acting
  • Operating pressure 6 bar
  • Nominal Diameter DN50…DN150
  • Min. temperature -20 °C
  • Max. temperature +80 °C
  • Inlet: Flange DIN 1902-1
  • Outlet: Flange DIN 1902-1

You can download the data sheet here.

Short Description

The pneumatically actuated PROKOSCH pinch valves of the 500 series are specially designed for use on pneumatic conveying systems, even with abrasive media. They are characterised 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 in the factory with test pressures above 24 bar.

Simple design and operating principle – the housing is pressurised and the flexible sleeve is compressed inside the housing. As soon as the pressure in the housing is released, the cuff 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 aluminium or stainless steel. Special designs with regard to the materials used, automation and construction are possible on request.

DN PN LW L / H D / K d x i
50 (2″) 6 47 205 / 64 165 / 125 18 x 4
65 (2½”) 6 62 205 / 74 185 / 145 18 x 4
80 (3″) 6 78 225 / 81 200 / 160 18 x 8
100 (4″) 6 97 280 / 91 220 / 180 18 x 8
125 (5″) 6 120 348 / 112 250 / 210 18 x 8
150 (6″) 6 144 418 / 128 285 / 240 22 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.

Standard Variations 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 Foodstuff application
AV Abrasive Foodstuff application
Sleeves Code
Standard, NR (Black) NS
Food Grade, NR (White) NW

Other cuff materials available on 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 the supplier to material receipt to final inspection ensure the highest quality. Furthermore, factory certificates according to EN 10204 2.2 and 3.1 are available on request.

Model Key: //–

Examples: 500/80/AG-NS, or 500/100/AN-NW

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