Zone Valve, 3/8" Flare, 24 Vac, 15 Second Nominal Opening Time, 2 Way, 20 Psi Maximum Differential Pressure Rating ( Closeoff ), 18 " Leads, 3.5 Cv, Spring Return to Open, Normally Open, No Manual Opener, Includes 2 Straight 3/4" Sweat Adapters

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