Batley Butterfly Valves - Weir Power & Industrial - #32

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32 Weir Power & Industrial First choice for power and industrial protection VULCANISED RUBBER LINED BV34000 Batley Valve BV 6-0810 Description The Batley range of Vulcanised rubber lined butterfly valves was developed in response to industries request for a high quality low cost valve for use on corrosive line fluids such as seawater and brine. The design is such that the body and shaft material is fully isolated from the line fluid and as such lower specification materials such as Cast Iron & Carbon Steel can be used in lieu of the more expensive AL Bronze and Stainless Steel. Due to the flexible design the valve can be supplied to suit all common flange standards such as BS 4504 PN2.5 to 40, ANSI 125 TO 300LB, JIS, DIN and BS 10, we can also supply valves to suit all international standards for face to face dimensions such as BS 5155, AWWA C504, API 609, DIN and ISO with special non-standard dimensions available on special request. The valve has a wide range of applications in many industries and in particular it has found favour in the Iron and Steel, Electrical Generation, Desalination and Marine Industry. The valve is ideally suited to the dual role of process isolation and control and as such can be fitted with a wide range of manual and powered operators. Rubber Selection Table Standard Materials of Construction The table above represents the most common materials of construction but it should be noted that other materials and combinations of the above materials can be supplied. For use on corrosive media Cast Iron and Carbon Steel vanes can be supplied with a number of different coatings, the most common of which are shown below: Glass Flake Coating, Rubber lining both soft (neoprene) or hard (ebonite), Xylan resin bonded PTFE, Fusion bonded epoxy. In some circumstances valve bodies may be supplied in a fabricated mild steel construction in lieu of Cast Iron or Cast Carbon Steel. Materials Temperature Range °C Seal Materials General Service Continuous Intermittent Min Max Max Nitrile Water, sea water, oils, natural gas - 30 + 100 + 120 Neoprene Some freons, oxygen, some chemicals and solvents - 30 + 100 + 120 Ethylene Propylene LP Steam, hot water, ketones, ester, alcohols - 40 + 120 + 140 EPDM W.R.L. Approved for potable water - 40 + 120 + 140 The vulcanised rubber lined butterfly valve incorporates a liner that is bonded to the valve body. This allows the valve to have higher closed differential pressures from full vacuum up to 20 bar g and the potential for higher fluid velocities up to 8 metres per second (dependent on valve size). The vulcanised/moulded liners can be supplied in a range of materials the most common being Neoprene, EPDM and Nitrile (Buna N). These cover a range of temperatures from -30 to +140°C. The valve body incorporates a small raised spigot that prevents the body liner from being over compressed during installation. Pressure Class • ASME 150 Size Range • 600mm to 2000mm Temperature Range • -40¢ª to 140¢ªC Body Type • Wafer, Lugged, Flanged, Clamped Materials • All castable materials, Carbon Steel, Stainless Steel, Duplex, Super Duplex, Hastalloy, Inconel, Monel, Titanium, etc. Vane Rubber lining Vulcanised rubber lined body Component Carbon Steel Stainless Steel Duplex Stainless Steel Aluminium Bronze Cast Iron Ductile Iron Body A216 WCB A351 CF8M A890 4A EN1982-CC333G EN 1561 EN 1563 Vane A216 WCB A351 CF8M A890 4A EN1982-CC333G EN 1561 EN 1563 Shaft 17-4 PH SS 17-4 PH/316 SS UNS 31803 Monel 17-4 PH SS 17-4 PH SS Bearings 316/PTFE 316/PTFE PTFE Bronze/PTFE 316/PTFE 316/PTFE Packings PTFE/Graphite PTFE/Graphite PTFE PTFE PTFE/Graphite PTFE/Graphite Gland Follower Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel