Hello
What are your thoughts on globe control valve body material choice for high pressure steam? The supply pressure is 41.5 barg 254C design and typically 37 barg saturated operating, which is dropped down to 10 barg for distribution to heat exchangers, process vessels etc. The control valve is controlled by a downstream pressure transmitter through a PID loop. Upstream of the valve is an automated parallel slide gate valve for auto-isolation.
I will commission my letdown station soon (end of the month), where I selected CL600 A 351 CF8M stellite trim control valves from Samson
On another project my colleague followed me but selected CL300 A 216 WCB stellite trim instead however he won't be commissioning for months
I'm working on design for a new project and am not sure which is the better material. I selected stainless previously because my manager told me we've had problems with CS valves (different manufacturer - won't name for professional reason) on HP steam before and wanted to give stainless a go.
Some background info: steam supply is typically customers scope and saturated (no superheat or accumulator) therefore quite wet. Separators are not typically installed, however me and my colleague being young are trying to convince senior engineers about the benefits of them.
Valve: Samson 3251
Any insight would be much appreciated
Kind regards
What are your thoughts on globe control valve body material choice for high pressure steam? The supply pressure is 41.5 barg 254C design and typically 37 barg saturated operating, which is dropped down to 10 barg for distribution to heat exchangers, process vessels etc. The control valve is controlled by a downstream pressure transmitter through a PID loop. Upstream of the valve is an automated parallel slide gate valve for auto-isolation.
I will commission my letdown station soon (end of the month), where I selected CL600 A 351 CF8M stellite trim control valves from Samson
On another project my colleague followed me but selected CL300 A 216 WCB stellite trim instead however he won't be commissioning for months
I'm working on design for a new project and am not sure which is the better material. I selected stainless previously because my manager told me we've had problems with CS valves (different manufacturer - won't name for professional reason) on HP steam before and wanted to give stainless a go.
Some background info: steam supply is typically customers scope and saturated (no superheat or accumulator) therefore quite wet. Separators are not typically installed, however me and my colleague being young are trying to convince senior engineers about the benefits of them.
Valve: Samson 3251
Any insight would be much appreciated
Kind regards