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In seawater piping systems, globe valves can be used to control and isolate fluid flow, provided that the materials and corrosion protection design are suitable for seawater service conditions. Seawater contains a high concentration of chloride ions and dissolved oxygen. If the valve material is not properly selected, corrosion can occur rapidly. Therefore, when globe valves are used in sea...
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Valve pressure rating is one of the primary parameters used to determine whether a valve can safely operate in a specific piping system. In industrial applications, pressure class does not simply represent the maximum working pressure of a valve. The actual pressure capability depends on the pressure-temperature rating defined by standards such as ASME B16.34, as well as valve materials, design co...
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Start With the Application, Not the Valve Name Water treatment and industrial pipelines do not ask the same thing from a butterfly valve. In water systems, the usual priorities are compact installation, low operating torque, reliable shutoff, corrosion resistance, and simple maintenance. In industrial service, the selection often becomes more demanding. Pressure, temperature, media compatib...
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Yes, a butterfly valve can control flow and may remain partly open, but only when the valve, actuator and operating range have been selected for throttling service. A line-size on-off butterfly valve held near the closed position can suffer poor control, cavitation, noise, vibration and concentrated seat or disc erosion. Partial opening is not inherently harmful; operating at the wrong opening for...
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