Product repair instructions for the Viking Model F-1 and Model F-2 Dry Valves. This video demonstrates the procedures for replacing key components of the Viking Model F-1 and F-2 Dry Pipe Valves. The components to be replaced include the clapper assembly, air plate assembly, hook assembly, diaphragm, latch, cover, and cover gasket. For more information please visit vikinggroupinc.com/products/vi...