Batley Butterfly Valves - Weir Power & Industrial - #6

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Description BATLEY SWING-THROUGH Butterfly Control Valves are designed to control the flow of liquids and gases where a complete tight shut-off is not essential. The 'swing-through' vane which has no contact with the valve body enables the valves to be used with high pressures and a wide range of temperatures. Sizes vary from 50mm up to 2000mm with body ratings up to ANSI Class 2500. Temperatures from minus 200°C to 1000°C, line pressures in excess of 300 bars and closed pressure drops up to 150 bars can be handled, depending upon valve size and construction. For throttling control, 60 degree vane rotation is normally used, 90 degree is also available. Actuation of the valves can be with pneumatic, electric or manual with accessories such as positioners (pneumatic/electric), transmitters, transducers, limit switches, air sets and solenoid valves. The Batley Swing-through butterfly valve has a basic 'equal percentage' characteristic but this is only true between the 10° and 60° open position. Beyond these points the characteristic deviates rapidly from the ideal and is not considered suitable for control purposes. All Batley control valves are mechanically set to operate between the closed and 60° open position. The rangeability of the Batley control valve operating between the 10° and 60° positions is approximately 33:1 Pressure Class • ASME 150 - 2500 PN10 - 400 Size Range • 50 - 2000mm Temp Range • 196¢ªC - 1000¢ªC Body Type • Wafer, Lugged, Flanged, & Butt-welded Materials Cast Iron Carbon Steel Stainless Steel Duplex St. St. Aluminium Bronze Body EN1561-GJL-250 A216 WCB A351 CF8M A890 4A EN1982-CC333G Vane EN1561-GJL-250 A216 WCB A351 CF8M A890 4A EN1982-CC333G Shaft 316 / 431 SS 17-4 PH SS 17-4 PH/316 SS UNS 31803 Monel Bearings Steel/PTFE Steel/PTFE 316/PTFE PTFE Bronze/PTFE Packings PTFE/Graphite PTFE/Graphite PTFE/Graphite PTFE PTFE Gland Follower St. Steel St. Steel St. Steel St. Steel St. Steel 6 Weir Power & Industrial First choice for power and industrial protection SWING-THROUGH BV10000 VALVES WAFER/LUGGED Batley Valve BV 6-0810