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Manual balancing valve, forged bronze body ASTMB283-06, EPDM O-ring, ports P/T, ‘’Venturi’’ type measuring element and ceramic disc, threaded rod for flow rate adjustment, fittings FNPT 12 and 20 mm Ø, maximum pressure and temperature 400 psi/250 °F. Flow range for 5 to 100 W.C P 0.4 to 12.4 USGPM.