QCI's standard 2 way pipe size valves (threaded, flanged, butt weld and socket weld) are considered to be reduced port because the diameter through the rotor is slightly smaller than standard schedule 40 pipe sizes. Our ¼" through 1-¼" 3 way and 5 way valves are reduced even further. In most cases however the port through the rotors is still larger than most ball valves.
Our 4 way "LL" valves are restricted even further due to either the baffle welded in or the angular porting through the rotor.
QCI's standard 2 way, 3 way and 5 way tube size valves (Tri-Clamp®, Cherry-Burrell and tube butt weld are considered full port since the diameter through the rotor is the same as through the valve body ports.