Corflex Products
Pinch valves have long been recognised as ideal for use in the hydraulic transport of solids in pipelines but have in the past been restricted in their use because of their relatively low working pressures.
In every other respect they are probably one of the most simple and efficient valves available, being simply a rubber tube pinched together by a double acting vice.
Corflex Pinch Valves are supplied for both low and high pressures. Size for size the Corflex Pinch Valves is probably suitable for higher pressures than any other similar valve.
Corflex Pinch Valves are used in applications where other valves such as plug, ball, gate, knifegate, diaphragm or other pinch valves require high maintenance due to wear or pressure or both.
The Corflex Pinch Valve has an excellent resistance to abrasion and because of this it is ideal for use on slurries. When fully open it is similar to a straight through rubber lined pipe and when closed gives complete isolation. Turbulence is minimal thus greatly increasing the life of the valve and the valves are not subject to scaling.
Because of the immense strength of the rubber sleeve the Corflex Pinch Valve can be used on high pressure applications or where surges in the pipeline can be expected, as well as in standard applications.
Corflex Pinch Valves can handle materials such as mine tailings, metallic ores, ash, sand, raw sewerage, dry powder, wood chips, pulps and paper stock, sugar pulp, cement and chemicals.
Where Corflex Pinch Valves are required as isolating valves they are supplied with a full round bore. If the valves are required for use as control valves then they would be of a pre-pinched design for more accurate control. Where high pressure and/or high velocities are involved the use of the valves as a control valve is not recommended.
Corflex has been manufacturing pinch valves for the slurry pipeline industry since 1981. The valves are manufactured to the highest standard as required by a strict quality assurance programme. Extensively used in South Africa they have also been installed in many applications elsewhere in the world.
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