The Vent Assembly, cataloged under National Stock Number 4820-01-065-6973, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Betts Industries, Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-065-6973 |
| Primary Part Number | PV46186ALTS |
| Item Name | Vent Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Betts Industries, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM; 56.500 IN. LG. MIN; 56.62 IN. LG. MAX; ONE END 10.000 IN. DIAMETER; RATED EMERGENCY VENTING CAPACITY:215,000 CU. FT. AIR PER HR. @ 5 PSIG; RATED CAPACITY: 800 GPM AT 3 PSIG WHEN VALVE IS OPENED 1.25 MECHANICALLY IN |
| Test Data Document | 19207-11668896 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| 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 |
|---|---|
| 11668896 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| PV45567-5 | Heil Environmental Industries (USA) |
| PV46186ALTS PRIMARY | Betts Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| PV45567ALB | 5/9 Secondary reference Betts Industries, Inc. |
| 45567-5 | 5/9 Secondary reference Heil Environmental Industries |
NSN 4820-01-065-6973 is a Vent Assembly, manufactured by Betts Industries, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-065-6973 has 3 manufacturer part numbers on file: 11668896 (U S Army Tank Automotive Command Amsta-Im-Mm), PV45567-5 (Heil Environmental Industries), PV46186ALTS (Betts Industries, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5315-01-215-7510, 4820-01-514-4936. Verify interchangeability with system specifications before substitution.
Key specifications for PV46186ALTS: General Characteristics Item Description: ALUMINUM; 56.500 IN. LG. MIN; 56.62 IN. LG. MAX; ONE END 10.000 IN. DIAMETER; RATED EMERGENCY VENTING CAPACITY:215,000 CU. FT. AIR PER HR. @ 5 PSIG; RATED CAPACITY: 800 GPM AT 3 PSIG WHEN VALVE IS OPENED 1.25 MECHANICALLY IN; Test Data Document: 19207-11668896 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING). 2 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.