Siemens 658 Powertop 3-Way 1/2" Flared Sequence Valve, 1.5 cv

Designed to select and modulate the ?ow of either hot or chilled water, without mixing, for radiant panel and similar applications, the 658 Powertop Sequence and Changeover Valves are designed with 2 inlets and one outlet for the sequence valve and with one inlet and 2 outlets in the changeover valve. The 658 Powertop Sequence and Changeover Valves are used for the selection and modulating of hot or chilled water through radiant panels connected to separate hot water and chilled water (4-pipe) systems. Features: Stainless steel valve stem for smooth operation and durability Large diaphragm area for control accuracy and tight close-off Durable actuator made to eliminate electrolytic action Removable actuator for ease of servicing Matched sequencing or control and changeover