Transcription of GUIDANCE ON VALVE TYPE SELECTION -b.ricardo
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GUIDANCE on Valves Type SELECTION VALVE TYPE SELECTION . VALVE type SELECTION should take account of : 1. Required function. 2. Service conditions. 3. Fluid type and condition. 4. Fluid characteristics. 5. Frequency of operation. 6. Isolation requirements. 7. Maintenance requirements. 8. Environmental considerations . 9. Past experience in comparable conditions. and size. 1. Required VALVE function and description Isolation (block) valves Valves intended for starting and stopping flow or for isolation of equipment generally be selected to provide: Low resistance to flow (low pressure drop) by means of a straight through flow configuration which may also facilitate line clearing.
Environmental considerations. 9. Past experience in comparable conditions. 10.Weight and size. ... general process, and utilities service for all ... may result in leakage and operating forces may increase as a result of thermal changes after closure.
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