Air Operated Pinch Valve

Electric Pinch Valve

Manual Pinch Valve

Pneumatic Pinch Valve

Rubber Sleeve for Pipe
Manual plastic pinch valve

Lianke Valves’ pinch valves deliver unmatched reliability in controlling abrasive, corrosive, and slurry media across industries. Engineered for durability and cost-efficiency, these pinch valves feature a robust design with a replaceable rubber sleeve that ensures zero-leakage shutoff and full-bore flow, eliminating clogging risks even with granular or viscous fluids. Main property of the sleeve Rubber […]

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Aluminum Alloy Manual pinch valve

Our pinch valve is ideal for media containing sediments, crystals, or abrasive materials. Common applications include wastewater treatment (sludge, grit, lime), power plants (FGD, ash removal), mining (tailings, slurries), chemical processes, and various industries. This pinch valve features unobstructed flow, full bore design, zero leakage even with particles present, and low maintenance. While temperature limited […]

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FAQ
How does a manual pinch valve work?
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A manual pinch valve operates by using a handwheel to control pinch bars that compress a rubber sleeve, regulating media flow. Turning the handwheel opens or closes the valve, allowing for precise flow control. It's commonly used in industries like wastewater treatment, chemical processing, and food production.
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What temperature range can your manual pinch valves operate in?
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Our manual pinch valves operate effectively within a temperature range of -40°C to +110°C (-40°F to +230°F), accommodating various industrial environments.
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What are the main applications of manual pinch valves?
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Manual pinch valves are commonly used where precise flow control of abrasive or corrosive fluids is required. Industries such as chemical processing, wastewater treatment, and food manufacturing utilize them. These valves effectively handle slurries, liquids with solids, or viscous fluids because they reduce clogging and provide tight sealing.
What maintenance is required for a manual pinch valve?
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Regular inspection of sleeve condition, lubrication of stem threads, and checking for proper closure. Main maintenance is sleeve replacement every 1-3 years depending on service conditions.
Can manual pinch valves handle high temperatures?
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Temperature limits vary by sleeve material. EPDM sleeves handle -40°C to +110°C, Natural Rubber operates from -40°C to +80°C, and NBR functions between -30°C to +100°C.
How do I know when to replace the pinch valve sleeve?
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Signs include visible wear/cracking, reduced sealing performance, increased operating torque, or leakage. Regular inspection helps prevent unexpected failures.
What's the cost difference between manual and automated pinch valves?
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Manual pinch valves typically cost 40-60% less than automated versions. Average price range: $200-2000 depending on size and materials.
Are manual pinch valves suitable for emergency shutdown?
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Not recommended for emergency shutdown due to manual operation speed. Better suited for regular process control and isolation.
What's the maximum particle size a manual pinch valve can handle?
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Generally up to 1/3 of valve diameter for optimal performance. Larger particles may cause premature sleeve wear or incomplete closure.
What are the main advantages of manual pinch valves over gate valves?
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Manual pinch valves offer superior handling of slurries and abrasive media, have no cavities where material can collect, provide full bore passage, and require simpler maintenance with only the sleeve needing replacement.
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