Batley Butterfly Valves - Weir Power & Industrial - #23

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Weir Power & Industrial First choice for power and industrial protection 23 Batley Valve BV 6-0810 METALSEAL BV26000 Reverse Flow Direction In the closed position the seal retaining ring prevents the seal ring from moving away from the pressure and so maintaining the sealing force between the seal and disc. As the line pressure increases the disc will deflect slightly to help maintain the seat leakage within the required standard. Description The double offset design and geometry of the valve and seal combine to ensure a uniform 360° seal contact in the closed position and the double eccentric action moves the disc into and out of the seat with the minimum of wear and seating torque. The valves are fully rated to ANSI class 150lb and 300lb in sizes up to 600mm with sizes above on request. All valve sizes can be drilled to suit most international flange standards up to 300lb and special valves can be manufactured with Bodies drilled to suit flanges up to ANSI Class 2500lb. The Metalseal design lends its self for use on higher temperatures and abrasive service where a PTFE seal would not be acceptable. The valve is supplied to ANSI Class IV leakage. The valve can be supplied with a range of hard surface deposits for the seat & seal such as hard Chrome plating, Stellite & Tungsten Carbide. Pressure Class • ASME 150 to 900 Size Range • 150mm to 600mm (Higher on request) Temperature Range • -196¢ªC to 900¢ªC Body Type • Wafer, Lugged, Flanged & Butt Welded Materials • Carbon Steel, Stainless Steel, Duplex, Super Duplex, Hastalloy, Inconel, Monel, Titanium, etc. T T For CV values refer to page 27. Normal Flow Direction In the closed position the line pressure will deflect the seal in the direction of the valve body thus maintaining the sealing forces between the seal and disc. This movement allows the required seat leakage to be maintained within the required standard.