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Continue to ChatASCO 52000283 - 3/2 NC, 24V AC, Differential Return, With Instant Fittings, Series 520 - ASCO Joucomatic Distribution Set https://www.valves-direct.com/product/asco-52000283-3-2-nc-24v-ac-differential-return-with-instant-fittings-series-520-asco-joucomatic-distribution-set/