Three-way control valves for hot water systems: Flow characteristics of the valve used as mixing valve (NT VVS 084) Posted onJune 21, 1990September 21, 2020Author Report #: NT VVS 084 Approved: June 1990 Download pdf Size: 468.95 KB Abstract This method is to be used for testing the hydraulic properties of 3-way control valves used as mixing valves. Categories and tags