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Webstone’s Isolator Uni-Flange Ball Valve is now outfitted with press connections, making it the fastest way to install any circulator pump. Press isolators are the latest additions to the rapidly expanding line of Pro-Connect press products. Available on rotating flange isolators with or without a drain and in sizes 3/4” through 2”, the new Pro-Connect Press Isolator is compatible with all popular press tools and guaranteed for life.