Dear Experts:
Could you please clarify how the requested stroking time for a control valve based on its assembly shop test results referenced in actual site condition?
It’s my understanding that the tested valve with stringent stroking times such as <2 secs or <1 Secs at assembly shop may not stroke at same speed when it’s installed at customer piping with actual process pressure.
Our actuators/springs are adequately selected to handle the dynamic & shutoff forces, however when it comes to stroke time they behave same? If not what would be the stroke time reference criteria between assembly shop & site condition. If no firm guidelines , could you please share the "acceptable" industry practices? Thanks
Regards,
Giri