Designed for installation at the bottom outlet of an aboveground storage tank (AST) where product flow must be stopped in the event of a fire. Fusible link holds the spring loaded valve open until activated. NOTE: The valves shown on this page require periodic inspection to ensure the shut-off mechanism is operating correctly. They are not intended to be used as a "block valve" and should not be opened under pressure. Features Flanged tank connection Adjustable hold open mechanism No shear section No locking mechanism 212º UL Listed fusible link standard Construction Details Body and plunger: Ductile iron Shaft: Stainless steel Shaft packing: Teflon O-ring: Teflon encapsulated Viton (4" x 3") Spring: Stainless steel Installation Instructions Installation Instructions (PDF Download)
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