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Continue to ChatEMERSON AVENTICS G651AR001Q117D0 - G1/8, 0.2-3 Bar, Round Gauge, ATEX Zones 1-21, Series 651 Regulator https://www.valves-direct.com/product/aventics-g651ar001q117d0-g1-8-0-2-3-bar-round-gauge-atex-zones-1-21-series-651-regulator/