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RMC 4 in 1 Inlet Control Valve c/w Adj Limiting 20mm CV75
The Filling-Group type 2128 is designed to automatically fill and refill central heating installations. The Filling-Group is permanently connected to the heating installation. The connection to the potable water system is made with a hose. When the supply pressure falls below the pressure of the heating installation during the filling operation, the integral check valve prevents the backflow of heating water into the potable water system.