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The sealing of these valves take place between the body and the elastic ring around the disc. These valves have very low torque and are 100% tight shut off with preferred flow direction and can work at higher pressures than concentric valves.  The pressure drop with the disc in fully open position is minimum because of the two piece shaft.

These valves are self-cleaning, easy to maintain, and easy assembly and disassembly.

These valves are used in multiple applications, being particularly suitable for water (drinking water, desalination plants, cooling systems, power generation, waste water, etc.).