Siemens 171D-10369S 599 SERIES 3W, 1-1/2", 63CV STAINLESS STEEL BALL VALVE, PROP (0-10V), NSRSiemens 171D 10369S This 599 Series 3 way ball valve with a non spring return Proportional (0 10V) actuator assembly, providing 200 PSI close off, is used to control hot or chilled water and up to 50% glycol solution in air handlers, convectors, fan coil units, unit conditioners, radiation and reheat coils. This 1 1 2 inch valve is 63 Cv, full port valve without flow characterizer insert, with stainless steel ball and stem, includes an operating
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