R538

Three-way ball control valve, 2 1/4" female gas threaded connections, DN40, PN16, KVS = 16, nickel-plated brass body, stainless steel internal parts, EPDM O-ring stem seals, TEFZEL characterizing disc for control curve, PTFE valve seat, EPDM internal sealing O-ring, fluid temperature +6...+120 °C. A-AB control port: optimized equal percentage control curve in the opening range, B-AB bypass: linear control curve. A-AB control port: bubble-tight leakage rate with perfect seal, B-AB bypass: leakage class with a leakage rate of approximately 1...2% of the KVS value.