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.
- 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