Siemens Building Technology 599 02056 Valve 320720 756 Utilizing this genuine HVAC universal Utilizing this genuine HVAC universal pressure switch equivalent ensures seamless system compatibility and maintains the operational integrity of your commercial or residential heating equipment This controller is strictly for use with single phase Permanent Split Capacitor (PSC) motors that are ball bearing rated and approved by the manufacturer for speed control ensuring stable local loop control and high rangeability in terminal units such as fan coils and reheat coils this normally open valve is designed to regulate the flow of hot or chilled water