Due to the 50 mm spherical clearances

Pressure valves provide a constant counterpressure and prevent siphoning Opening pressure is fix at 3 bar

pressure boosting and closed circulation systems with a high static pressure

DDA 30-4 FCM-PVC/V/C-F-31I002F The SMART Digital DDA is a compact positive displacement

valvola multifunzionale 95730815 Due to the 50 mmCompact valve unit for direct mounting on the pump discharge connection. Multifunction valves combine four functions: 1. Constant counter pressure and anti siphoning 2. Pump protection through pressure relief 3. Deaeration of pump head during start up 4. Emptying of discharge line