FIG 272HOS
Internal Emergency Valve - Shear Section
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.
WARNING: 272 Series 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.
Product Features
Standard Features
Adjustable hold open mechanism
212° UL Listed fusible link standard (165° available)
Construction Details
- Body and plunger: Brass
- Shaft Packing: PTFE impregnated Fiber or PTFE
- O-ring: FKM or PTFE
- Spring: Stainless steel
- Shaft: Zinc plated steel
Product Ordering Instructions
| Fig | Suffix | Size | Description | Weight |
| 272HOS | 0100 AV | 2” x 2” | Internal Emergency Valve - Shear Section | 6.8 |
| 272HOS | 0500 AV | 3” x 3” | Internal Emergency Valve - Shear Section | 9.7 |
| 272HOS | 0600 AV | 4” x 3” | Internal Emergency Valve - Shear Section | 17 |
| 272HOS | 0700 AV | 4” x 4” | Internal Emergency Valve - Shear Section | 19.8 |
| 272HOS | 0900 AV | 2.5” x 2” | Internal Emergency Valve - Shear Section (PTFE) | 8 |