Valve,Assembly, 2 Way Normally Open, 1 1/2", NPT, 0-10Vdc, 4-20mA, 24Vac, 25 Cv Equal Percentage Flow Bronze Body with Stainless Steel Trim and Spring Return Modulating Actuator
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1.5"N/O SStrim=% 25cvVlvAssy For Siemens Building Technology Part# 274-03115