We offer swing through valve. The batley bv10000 is a control valve that is suitable for many process applications. The bv10000 valve is available with varidiff trim, if cavitation is a problem. The standard range of butterfly valves has been designed to give cost effective flow control 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. The standard butterfly valve has a basic equal percentage characteristic but this is only true between the 10 and 60 open position.