A safety valve is a relief valve that has no cutoff between the process and the valve. It can't be isolated.
A relief valve is a valve that can have a cutoff between the process and the valve and can be isolated.
We have a 400HP, 480Volt, ID Fan being installed in a bag house for a 100,000 lb/hr boiler. The fan is made by Clarage and they have specified dampers on the discharge side of the fan only. There are no dampers on the inlet. The motor is powered by a VFD. It's designed so the outlet dampers...