PIC Series Pinch Valves - Reliable Sealing & No Downtime

Milton Roy pinch valves are engineered for maximum reliability and efficiency:

• Full-bore design: No abnormal friction losses, no risk of blockage
• Long sleeve service life: Sleeves strengthened with fibre reinforcement enabling use in extreme conditions
• Easy to install
• Energy-efficient: Low compressed air consumption
• Minimal wear: Only the sleeve is a wear part, making maintenance quick and easy.

Working Principle

The automatic elastic deformation type pinch valve consists of:

• A valve body and a cylindrical elastomer sleeve reinforced with fibers.
• Normally open, the valve closes when a fluid, usually compressed air but can be replaced by pressurised water,is applied between the body and the sleeve.
• The action of this fluid squeezes & crushes the sleeve in a particular direction, which is determined by careful positioning of the fiber reinforcement
• A minimum of 1,5 to 2 differential pressure between service and control fluid pressure is required to crush correctly the pinch valve.
• This pressure pinches the sleeve shut, creating a complete seal.

Any industry that processes abrasive or corrosive slurries, dry solids prone to clogging, viscous media, or other difficult-to-control materials requires the reliable performance of our pinch valves.

Milton Roy pinch valves are suitable for a wide range of fluids and challenging operating conditions:

• Liquids: Water, acids (HCl, HNO₃, H₂SO₄ …), alkalis (NaOH, ammonia, phosphates), and organic solvents. Their corrosion-resistant sleeves make them ideal for chemical dosing and aggressive media.
• Viscous or abrasive slurries: Seawater, wastewater, limewash, paper pulp, paint, sludge,soot, clay slip, etc. The full-bore design prevents clogging and ensures smooth flow even with high solid content.
• Powders: Cement, flour, sand, talc. Pinch valves handle dry bulk materials without leakage or dust emission.
• Food & beverage: Beer, wine, cocoa butter, edible oils, beet juice, sugar, syrups, etc. 
• Other fluids: Fertilizers, reagents for water treatment, and specialty chemicals.

They are widely installed in:

• Wineries and sugar refineries, ensuring contamination-free flow control.
• Wastewater treatment plants for acids and lime dosing, grit conveying as well as raw sewage and sludge handling.
• Cement plants, quarrying and silos for abrasive powders and slurry control.
• Mining and pulp & paper industries, where reliability under harsh conditions is critical.
• Trains for wastewater and toilet systems.

Thanks to their versatility, Milton Roy pinch valves are trusted in sectors requiring leak-proof sealing, resistance to corrosion and abrasion, and minimal maintenance. Combined with quick sleeve replacement and low energy consumption, these valves deliver maximum uptime and operational safety across diverse industries.

What is a pinch valve?

How does a pinch valve work?

How effective is a pinch valve?

• Provide 100% leak-proof sealing.

• Handle abrasive and corrosive fluids without damage.
• Offer full-bore flow, preventing blockages.
• Require minimal maintenance (only the sleeve wears).
• Are energy-efficient, consuming little compressed air.

Milton Roy pinch valves are proven in industries like food processing, wastewater treatment, cement, silica, ceramic, glass, mining, silos, and chemical industry, ensuring safe, reliable, and cost-effective flow control.