... way valve.HYDRAULIC CIRCUIT Built with user side and source side water inlet/outlet connectors, water discharge connectors, air vent valve, mod ... contactor,Compressor protection breaker,User side water pump contactor (for mod.4.5-28)User side water pump breaker (for mod.4 ... which must be installed in factory,Source side water flow switch,Source side water pump,Anti-vibration rubber,Metallic filter for ...