New three-in-one steam pressure regulator, separator, and trap replaces older pressure reducing valve and separate components. The TLV regulator maintains a much tighter control on steam pressure entering the steam tunnel, compensating for boiler pressure fluctuations upstream and changing downstream demands. Built in separator and trap keep removes excess water out of the steam immediately before it enters the steam tunnel for better steam performance. The new adjustment knob is easier to fine tune your steam pressure entering the tunnel.