Pinch Valves

Pinch Valve

African Valve is a dependable Pinch Valves Supplier in Angola, offering valves designed specifically for handling slurries, abrasives, and corrosive media in challenging flow conditions. These valves use a flexible elastomer sleeve as the flow control element, which is pinched or released to start or stop the fluid flow, ensuring a full bore, clog-free passage.

Function & Working

Pinch valves operate by compressing an internal rubber sleeve to restrict or allow flow. When pressure is applied to the valve body or an actuator, the sleeve is pinched shut to stop flow; when released, the sleeve returns to its open shape, allowing unrestricted media passage. This simple, maintenance-friendly design eliminates contact between the process media and mechanical parts.

Advantages

• Full bore design eliminates clogging and pressure drop

• Ideal for abrasive, corrosive, or fibrous fluids

• Low maintenance with no internal metal parts in contact with media

• Excellent sealing capabilities even with solids in the line

• Long-lasting elastomer sleeves are replaceable and economical

Industries Served

• Mining and Mineral Processing

• Pulp and Paper Industry

• Wastewater Treatment Plants

• Cement and Construction

• Chemical and Fertilizer Industry

• HVAC Slurry and Ash Handling Systems

Key Components

• Valve Body – Cast or fabricated from carbon steel, stainless steel, or aluminum

• Sleeve (Liner) – Made from natural rubber, EPDM, neoprene, or nitrile depending on media

• End Connections – Available in flanged, threaded, or customized configurations

• Actuation Mechanism – Manual handwheel, pneumatic cylinder, or electric actuator

• Top Cover – Removable for easy access to the sleeve

• Support Housing – Provides structural strength to withstand closing force

Technical Specifications

• Design Standards: Manufacturer standard / customized to process

• Body Materials: Carbon Steel, Stainless Steel (CF8M), Aluminum

• Sleeve Materials: Natural Rubber, EPDM, Neoprene, Nitrile, Hypalon

• Pressure Ratings: Up to 10 bar depending on size and sleeve type

• Size Range: DN25 to DN600

• End Connections:

  • Flanged (ANSI/DIN/BS)

  • Threaded (NPT – Compact pipelines)

  • Custom weld ends on request

• Actuation Options: Manual, pneumatic, electric

• Special Features:

  • Zero leakage even with abrasive media

  • Simple inline sleeve replacement

  • No gland packing or stem leakage

  • Reliable performance from a trusted Pinch Valves Supplier in Angola