R522

Three-way ball control valve, 1 1/2" female gas threaded connections, DN25, PN16, KVS = 6.3, nickel-plated brass body, internal parts in stainless steel, EPDM O-ring stem seals, TEFZEL characteristic disc for control curve, PTFE valve seat, EPDM internal sealing O-ring, fluid temperature +6...+120 °C. Control port A-AB: equal percentage control curve optimized in the opening range, bypass B-AB: linear control curve. Control port A-AB: perfect shut-off leakage rate with air bubble seal, bypass -B-AB leakage class with a leakage loss of approximately 1...2% of the KVS value.