Pinch valve is widely accepted as designs suited to industrial, municipal and mining services where abrasive, corrosive, scale or plugging prone slurry, sludge, liquid or bulk solids are processed. Pinch valves offer a cost-effective alternative to metal alloy, lined, or coated ball, plug, gate, and diaphragm valves that do not offer comparable mechanical advantage, chemical resistance, leak tight shut-off, or 100% full flow.

Manufacturers of Pinch valves offer a wide range of design, performance, quality and service capabilities. Pinch valve manufacturers sell in their domestic markets also the global market. As in cases of all valves, a thorough understanding of process conditions is essential to selecting the correct pinch valve elastomer tube (also referred to as rubber sleeve or rubber muff) to obtain full value and longevity from this versatile product.

When problems with Pinch valves arise, it is only due to elastomer failure as the rubber sleeve is stretched and stressed during closure. This often results in the cutting of the rubber sleeve around the  pinch area, or incomplete closure resulting in high velocity wear and shortened sleeve life. In some cases, users are simply unaware that specialized rubber constructs with good / double reinforcement are required for negative pressure/vacuum conditions/good life of sleeve and avoid pump damage from sleeve collapse on suction side.

Major improvements in Pinch valve rubber sleeve resistance to abrasion, chemicals, corrosion, temperature, as well as significant improvements in pinch valve design technology, have expanded the applications with the introduction of high-quality pinch valves. One of the reasons for increased usage is the availability of automatic pinch valves- Gear operation, Electrical actuation, pneumatically operated On/Off and throttling control valves. Pinch valve users are no longer limited to non-standard face-to-face designs that make maintenance problematic and restrict wider use replacing other conventional valves. Other improvements include the ability to detect sleeve wear as well as redesigned rubber sleeve with reinforcement that ensure higher cycles and extended sleeve life. Specialized constructs also allow for operation on the suction side of a pump and in vacuum conditions without collapse.

For pinch valve, the initial purchase price is just one portion of the total ownership cost. As erosive and corrosive media wear the rubber sleeve / liner / muff / tube, it must eventually be replaced. Elastomer quality, price, and frequency of rubber sleeve replacement are a major component of life-cycle costing, as are direct and indirect costs of valve removal and reinstallation, time, repair, product loss, contamination, clean up, and other factors per incident. Accordingly, paying a bit more for quality at the outset can often be recouped in less than a year by simply avoiding the cost of one maintenance. (Explore the latest technology for lowest cost of ownership of pinch valves in manual, automated or throttling services.)

Technology, design features, and quality employed to manufacture pinch valves range from conventional design suppliers to those offering highly engineered designs and pro-active service support. As not all applications require the same level of performance and product selection, a comparison of features among major manufacturers helps deciding pinch valve purchase.