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advance variable backcheck
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What does AVB mean in a closer and which closers are available with this option?
Resolution:
AVB stands for Advanced Variable Backcheck. It is a cylinder option when ordering, that allows backcheck to start at about 45 degrees instead of the normal 75 degrees. 4110, 4210...:
ADVANCED VARIABLE BACKCHECK CYLINDER
Resolution:
AVB, Cylinder Function, 4110 Series Closer:
Which closer should I use for a "High Wind" condition?
Resolution:
A 4110 with AVB (advance variable back check) would be recommended. Using a SCUSH (Spring Cush) arm will also help minimize shock to all door hardware.:
AVB
Resolution:
Advanced Variable Backcheck: