The Bray McCannalok Superior-Efficiency Butterfly Valve Overcomes high-force wear with its patented twin-eccentric (double offset) stem and disc design. By offsetting the stem, the McCannalok generates a "camming" action that lifts the disc away from the seat instantly on opening. The control valve adjusts the method, and the new method https://stephenb433ynd0.onzeblog.com/profile