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Siemens 171C-10303 2W 1/2", 1.6CV BALL VALVE ASSY, CHRM-PLAT BRASS BALL & BRASS STEM, 0-10V NSRMFR: Siemens MPN: 171C-10303$147.19
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Siemens 171C-10302S 2W 1/2", 1CV BALL VALVE ASSEMBLY, STAINLESS STEEL BALL AND STEM, 0-10V NSRMFR: Siemens MPN: 171C-10302S$174.14
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Siemens 171C-10302 2W 1/2", 1CV BALL VALVE ASSY, CHROME-PLAT BRASS BALL & BRASS STEM, 0-10V NSRMFR: Siemens MPN: 171C-10302$147.19