Water Source Heat Pump Screw Chiller: High stability,low noise, longer life to use, easy to install and operation Water Source Heat Pump ... Valve8,Refrigrent : R134A9,Condenser:Shell and Tubes10,Evaporator,Heat Recovery System:Shell and Tubes11,Cold Water Flow(m3 ... × 2200 High stability. Low noise, longer life to use, automatically control, easy to install and operate Water Source Heat Pump Screw ...