The Disk,rupturable, cataloged under National Stock Number 4820-01-486-7820, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bs&b Safety Systems Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-486-7820 |
| Primary Part Number | AV 2IN-9/11.5-316/TEFLON |
| Item Name | Disk,rupturable |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bs&b Safety Systems Llc |
| Status | ACTIVE |
| Disk Material | STEEL COMP 316 |
| Furnished Items and Quantity | 2 GASKET |
| Burst Pressure | 9.0 PRESSURE POUNDS PER SQUARE INCH GAGE |
| Extra Long Reference Number | TYPE AV 2 INCH, 9-11.5 PSI, 316SS/POLYTETRAFLUOROETHYLENE GASKETS IN |
| Burst Temperature | 72.0 FAHRENHEIT DEGF |
| Cross-Sectional Shape | FLAT |
| Disk Size | 2.000 INCHES IN |
| Reference Number Differentiating Characteristics | DIFFERENTIATED BY EXTRA LONG REFERENCE NUMBER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AV 2IN-9/11.5-316/TEFLON | Bs&b Safety Systems Llc (USA) |
| AV 2IN-9/11.5-316SS/TEFLON | Bs&b Safety Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| TYPE AV 2 INCH, 9-11.5 PSI, 316- | 3/1 Design control — primary reference Bs&b Safety Systems Llc |
| TYPE AV-2NPS-9- | 5/9 Secondary reference Bs&b Safety Systems Llc |
NSN 4820-01-486-7820 is a Disk,rupturable, manufactured by Bs&b Safety Systems Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-486-7820 has 2 manufacturer part numbers on file: AV 2IN-9/11.5-316/TEFLON (Bs&b Safety Systems Llc), AV 2IN-9/11.5-316SS/TEFLON (Bs&b Safety Systems Llc).
Key specifications for AV 2IN-9/11.5-316/TEFLON: Disk Material: STEEL COMP 316; Furnished Items and Quantity: 2 GASKET; Burst Pressure: 9.0 PRESSURE POUNDS PER SQUARE INCH GAGE; Extra Long Reference Number: TYPE AV 2 INCH, 9-11.5 PSI, 316SS/POLYTETRAFLUOROETHYLENE GASKETS IN. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.