Type BV3+1 (3-way + 2-way) For high-pressure humidification and adiabatic cooling systems Ports Flow coeficient Kv [l/min] Differential Material pressure [bar] Coil type Order code FEATURES: Designed for high-pressure humidification and adiabatic cooling applications. Each block has a single pressure line connection and a single drain port for pressure relief and flushing. Valve units are operated by a pair of coils, one NC and one NO. Flush valve is 2/2 NC. Single unit version also available. FUNCTION: P = IN (main pressure line) A = OUT R = DRAIN At power off the main path (P-A) is shut, but the drain stays open to allow pressure relief and prevent nozzle drip.