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Butterfly valve for Dummies

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The Bray McCannalok Significant-Functionality Butterfly Valve Overcomes large-stress have on with its patented dual-eccentric (double offset) stem and disc structure. By offsetting the stem, the McCannalok produces a "camming" action that lifts the disc clear of the seat right away upon opening. A Butterfly valve is 1 / 4-transform rotary https://henryi553yoc0.wikinstructions.com/user
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