PREMAFLEX Pinch valves
PREMAFLEX pinch valves are pneumatic shut-off devices for liquid, viscous, granular, contaminated, fibrous and aggressive substances.
Pinch valves are reliable, robust, inexpensive and available in a wide range of nominal widths.
Metal design internal thread
Our pinch valves of the PQVI series are available in nominal sizes DN 20 (G 3/4 “) and DN 25 (G 1”). The pinch valve of the PQVI series consists of a casing, two clamping pieces and two union nuts as well as a rubber sleeve. The rubber sleeve is centred in the middle of the casing and is held on both sides by the clamping pieces and union nuts. Therefore, only 6 components are required for a fully functional PREMAFLEX pinch valve. The valve can be installed in any position.
Flanged Pinch valves
Standard PQVF pinch valves are available in nominal sizes DN 40 to DN 200. Our cost-effective standard pinch valves of the PQVF series consist of a grey cast iron GG20 casing with two clamping flanges, also made of grey cast iron GG20 as well as a highly elastic rubber sleeve with fabric inserts. The rubber sleeve is centred in the casing and is held by clamping flanges on both sides. Therefore, only four components and a few hexagon bolts are required for a fully functional PREMAFLEX pinch valve.
In addition, the Prema-Service offers various casing and flange materials as well as sleeve qualities for a versatile range of applications.
POM Pinch valves
PQVI-POM pinch valves are available in nominal sizes DN 15 to DN 50. They are made of polyoxymethylene (natural POM). Polyoxymethylene is a particularly low-wear material.
POM is a material characterised by its high strength, toughness, low cold flow and high elasticity. This material is food-safe according to the German BfR Federal Institute for Risk Assessment Recommendations (special designs available on request).
Control and monitoring units
The highly elastic sleeves are the core pieces of our pinch valves and inner-tube valves. The sleeve is centred in the casing and is held on both sides by clamping flanges or clamping pieces. Built-in fabric inserts guarantee the closure of the sleeve in one plane to the central axis as well as a long service life. Due to the solid and simple construction of our PREMAFLEX pinch valves, the replacement of this spare part is possible with just a few movements and therefore contributes to low maintenance costs.
With the help of detailed assembly instructions, a new sleeve can be installed on site and production downtimes can be shortened. For this reason, our large stock is kept up-to-date with almost all common nominal sizes and elastomer qualities for your required operating conditions.
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