Tilting Disc Check

DISC ' Of lightweight, low inertia shape, designed for maximum strength and rigidity. Semi-balanced by the positioning of the stub shafts, it is able to open at low pressure differentials. Tilting disc check valves open fully at water velocities as low as 0.6m/sec, thereby overcoming 'disc flutter' commonly found in conventional tilting disc check valves and which leads to rapid wear of the shaft and bearings and the inevitable falling-off in efficiency.

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The disc is self-centring and sealing is effected by accurately turned and bevelled seats in the body and on the disc edge, giving tight shut-off at both high and low pressure differentials.

The oblique seating angle, 15° on valves to 450mm diameter (10° for valves 500mm and above) gives a short angle of swing from fully open to close.

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STUB SHAFTS ' A small but important element in the design of the tilting disc check valve, which so often is the cause of failure in conventional valves. These heavy stub shafts are positioned to give maximum strength with minimal clearance between the body and disc so that there is no unsupported length of shaft. All loads on the shaft are therefore carried in shear and not in a combination of bending and shear which can be the cause of so many failures in conventional valves used on steam and gas lines which are subject to rapid opening due to high velocity.

The stub shafts have seal welded covers on the outside of the body to eliminate all possible leakage to atmosphere, making the tilting disc check valve an ideal valve for hazardous or 'fire safe' installations.

The Tilted Disc® Check Valve is an excellent choice for raw water, cooling water and treated water/wastewater applications. Its streamlined body contouring, flow area 40% greater than nominal pipe size and hydrodynamic disc combine to provide the lowest headloss of any check valve produced today.

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