System designers and end users are cautioned to review specific warnings or specifications found in instruction sheets or labels packed or attached and shipped with the products. System designers must provide a warning to the user in the system instructional manual if protection against a failure mode cannot be adequately provided. The system designer is warned to consider the failure modes of all component parts used in industrial valve applications and to provide adequate safeguards to prevent personal injury or damage to equipment in the event of such failure. Through misuse, age, or malfunction, components used in industrial valve applications can fail in various modes. Before using these products with fluids other than these specified, for non-industrial applications, life-support systems, or other applications not within published specifications, consult Process Systems Pty Ltd. Do not use these products where pressures and temperatures can exceed those listed under ‘Technical Data’ and in our individual ‘Series’ data sheets. These products are intended for use in industrial applications only. Please note that a CV value is not a linear progression so it cannot be extrapolated out just by looking at the values, it is really just meant to give you a comparison flow rate.įeaturing offsets on the stem and valve sealing, the flow rate through the valve varies to conventional concentric Butterfly valves. Below is a table of the flow rates for Butterfly Valves at different opening stages between zero degrees (fully closed) and ninety degrees (fully open). Even though we work on a metric system, measures of flow are commonly given as a CV value which is an Imperial measure flow in US gallons per minute of water at 60° fahrenheit with pressure drop of 1 psi across the valve.
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