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.WARNING: 272 Series valves require periodic inspection to ensure the shut-off mechanism is operating. Should not be opened under pressure.
Features
- Adjustable hold open mechanism
- 212° UL Listed fusible link standard (165° available
Construction Details
- Body and plunger: Ductile iron
- Shaft: Zinc plated steel
- Shaft packing: Teflon®
- O-ring: Teflon® ecapsulated Viton®
- Spring: Stainless steel
