Siemens 171A-10305S 2W 1/2", 4CV BALL VALVE ASSY, STAINLESS STEEL BALL AND STEM, FLOATING NSRSiemens 171A 10305S This 599 Series 2 way ball valve with a floating control fail in place actuator assembly, providing 200 psi close off, is used to control hot or chilled water and up to 50% Glycol solution in convectors, fan coil units, unit conditioners, radiation and reheat coils. This 1 2 inch valve is 4. 0 Cv, equal percentage flow characteristic, with stainless steel ball and stem, and an operating handle that can manually operate the valve in
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