EMERSON Keystone Butterfly Valves

About EMERSON Keystone Butterfly Valves

Features

• Patented wafer style body and disc in high engineered composite results in excellent internal and external chemical resistance.
• Light weight construction results in lower cost and simplified installation.
• No extra pipe support needed when installed in plastic or GRP piping.
• Disc in high engineered composite material provides excellent corrosion resistance.
• All fasteners in stainless steel 316 as standard.
• Bubble tight shut-off in both directions, in accordance with EN 12266-1 leakrate A.
• Pressure range up to PN 16 at elevated temperature.
• Valve can be used in high line velocity applications up to 12 m/sec.
• Spindle and primary valve seals are not influenced by the flange bolting force or pipe flange type.
• High Kv (Cv) value.
• No need for flange gaskets.
• Primary stem sealing exceeds the pressure rating of the valve and prevents leakage through the shaft area to atmosphere.