Pinch Valves

Festo Pinch Valves

Festo’s pinch valves deliver **precise control of liquids, dusty media, solids and mixtures ** in process-engineering environments. They feature a soft-sealing elastomer sleeve that opens fully under pneumatic actuation, offering minimal flow resistance and high process reliability. 

These valves are offered in normally-closed and normally-open configurations, enabling versatile use across applications such as conveying, dosing and shutdown functions. 

⭐ Important: The free-passage valve design with elastomer sleeve ensures clog-resistance, long life and suitability for abrasive or mixed media.

Design & Functionality

The pinch valve functions by compressing or releasing a flexible sleeve within the valve body. When actuated, the sleeve opens to allow media flow; when de-actuated (or spring reset in the normally-closed version) the sleeve closes, isolating the process media. 

Available in multiple variants, including:
• Standard in-line housing (DN 6 to DN 50) with different porting (G, NPT or clamp ferrule) 
• Housing materials: aluminium or stainless steel for clean-design or hygienic applications 
• Shut-off element materials: EPDM, silicone (VMQ), NBR to suit temperature and media resistance requirements 

⭐ Important: Variant choices for housing material, porting type and sleeve material allow optimisation for harsh, hygienic or abrasive environments.

Total Crossed Beams

This valve family spans a broad functional range—from small nominal diameters (DN 6) to larger bore (DN 50)—ensuring full coverage for many process-automation needs. It supports reversible flow direction, optional vacuum service, and high burst pressures for robust use.

Beam Pitch Options

Translation: Flow capacity, actuation type, porting and nominal size options.
Selection includes:
• Valve functions: “normally closed” (M22C) or “normally open” (M22U) 
• Nominal diameters: DN 6, 15, 25, 50 
• Flow rates: from Kv 0.7 m³/h up to 72 m³/h depending on size 
• Media temperatures up to +150 °C (for silicone sleeve variants) 

⭐ Important: The broad spectrum of sizes, flow rates and materials enables precise matching to specific process requirements—from fine powders to viscous slurries.

Intrinsic Synchronism

Internal design ensures minimal dead-volume and tight sealing of the elastomer sleeve, enabling consistent shut-off and high repeatability in cyclic operation. optional integrated magnet for end-position sensing is available. 

Operational Advantages

• Free bore design for minimal clogging and low maintenance
• Soft sealing sleeve virtually eliminates leakage to atmosphere or control circuit
• Suitable for vacuum and high-pressure media as well as abrasive solids
• Hygienic and clean-design housings for food or pharma use
• Wide mounting flexibility (inline, any orientation) and high burst-pressure ratings

Applications: Conveying of powders and granulates, slurry and viscous media shut-off, aerosol/dust extraction, food-production lines, packaging machines, chemical dosing, bulk-material processing.