NDC Deluge Valve



The NDV-1 Deluge Valve features a unique pressure-operated tubular diaphragm configured axially inline with the water flow. The tubular diaphragm is a single-piece resilient and durable rubber part that has been shaped to create a control chamber with the valve body. Inlet water pressure supplied into the chamber pushes the diaphragm against the centrally-located seat, creating an airtight seal that prevents water flow.