The Bray McCannalok Superior-Efficiency Butterfly Valve Overcomes large-stress wear with its patented twin-eccentric (double offset) stem and disc design. By offsetting the stem, the McCannalok produces a "camming" motion that lifts the disc faraway from the seat immediately on opening. The control valve is an automatic valve that may make https://edenm343ape4.national-wiki.com/user