High Pressure Pinch Valve for Long-Distance Transport

High pressure pinch valves, like PN16 pinch valve and class 150 pinch valve designs, involve a rugged and heavy-duty pinching mechanism in positioning the sleeve, resulting in an almost accurate and measurable flow of media. 

This kind of valve is popular and commonly used for long distance operations in mining tailings lines or oil sands, as it is designed with no seats to wear, no packing to maintain, no expensive body alloys required, and no fugitive emissions. In this blog, we will further explain the importance of high pressure pinch valves in industrial applications. 

High Pressure Pinch Valve Features 

High pressure pinch valves feature robust designs and reinforced rubber sleeves or elastomer constructions with multiple fabric plies, supported with highly durable nylon, polyester fabrics, or Kevlar material. Two heavy-duty pinch bars allow the sleeve to close even on solid materials and its flexing action removes the possibility of scaling. Its self-cleaning ability flushes abrasives during closure, extending the life of high pressure slurry pump valves. 

These features surpass standard valves in long-distance transport systems where pressure may increase from elevation changes or pump stations, testing durability. Additionally, their used control pinch valves have varied actuators. Electric or hydraulic actuators are used for automatic operations, while bevel gears are ideal for manual operations. 

How to Calculate Pinch Valve Pressure Rating?

Calculating a pinch valve’s pressure rating involves learning and understanding its components, particularly the sleeve’s material (rubber/elastomer) and body design, using manufacturer specs, like PN/Class ratings for general use. 

However, this mainly depends on knowing your system’s ΔP = Pressure Drop through pinch valve (psi), Q = Flow Rate, and ρ = Fluid Density (p/cu ft), as well as ensuring the material of sleeve can handle the specific temperature and corrosion or abrasion for safe operation as these determine the sleeve’s pinching force and the integrity of the valve body, typically specified in manufacturer sizing charts.

Frequently Asked Questions (FAQs) 

What are pinch valves used for?

• The pinch valves are used for controlling or shutting off the flow of media, often high-purity liquids. They usually excel in harsh conditions with abrasive or corrosive slurries. 

Which type of valve is best suited for high pressure applications?

• The types of valves that are best suited for high pressure applications are commonly gate, globe, ball, and needle valves. Gate and globe valves are ideal where flow isolation is vital, while ball and needle valves are for flow metering. 

What does a pressure limiting valve do?

• The pressure limiting valve prevents pressure spikes and maintains a steady flow within safe limits, acting like a guardian for your plumbing. 

Conclusion

High pressure pinch valves overcome pressure limits in long-distance slurry transport thanks to their robust engineering designs, proven durability, as well as precisely calculated pressure ratings—providing reliable and stable performance for high pressure slurry pump valve demands in pipelines and mining. 

LIANKE’s versatile rubber sleeve pinch valves for pipe systems are a combination of durability and flexibility. Available in neoprene sleeving and flexible rubber sleeve options, these protective features suit different applications. Additionally, the rubber tube sleeve design guarantees a perfect fit for PVC and metal pipes.