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Steam Radiator Inlet Orifice Plates
What are you guys opinion on this.
I operate a fairly large apartment complex that gets high temp hot water from a co-gen plant. We use the HT HW to make low pressure steam with steam generators and hot water through heat exchanges. We also have about six old Dunam-Bush Vari-Vac's through out the complex, and a vari-vac control that operates zone valves based on out side air temp. Management wants to install Steam Radiator Inlet Orifice Plates, install TRV's and remove the thermostatic bellows on each radiator in each apartment. I have tried do some google-fu research to see if there is any negatives but keep coming up with the positives. Most of the positives are by the same company that is contracted to do this project. Does anyone have experience with inlet orifice plates?. Any Pro's or Con's. Thanks !