In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Orifice plates and condensate in supply risers
I am troubleshooting in an apartment complex with vacuum return. In 2012 thermostatic radiator valves (TRV) with orifice plates were installed. There are complaints of banging throughout the complex. The three buildings built in 1953 do not have drips on the supply risers. When orifice plates are installed, is more condensate produced in the supply risers, so that drip traps at the base of the supply risers becomes necessary?