· All units fully plumbed, ready for use. Mounted on 1/4" silk-screened ABS plastic panels. · Thermostatic mixing valve for accurate temperature control, 3" dial thermometer, flow control valve, 1/2" NPT inlet connectors, 3/4" garden hose outlet, adjustable spring check valves, 20 micron water filter cartridge. · This up-dated model has a flow control from 1/2 GPM up to a full 7 GPM, (Gallons Per Minute).