The Valve,check, cataloged under National Stock Number 4820-01-483-2437, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Controlled Environment Packaging, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-483-2437 |
| Primary Part Number | VA331 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Controlled Environment Packaging, Inc. |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 SPRING AND 1 NUT AND 1 COVER |
| Media for Which Designed | NITROGEN, GASEOUS SINGLE RESPONSE |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| VA331 PRIMARY | Controlled Environment Packaging, Inc. (USA) |
| Reference | Meaning |
|---|---|
| VA331 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-483-2437 is a Valve,check, manufactured by Controlled Environment Packaging, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-483-2437 has 1 manufacturer part number on file: VA331 (Controlled Environment Packaging, Inc.).
Key specifications for VA331: Furnished Items and Quantity: 1 SPRING AND 1 NUT AND 1 COVER; Media for Which Designed: NITROGEN, GASEOUS SINGLE RESPONSE; Part Name Assigned by Controlling Agency: ONE WAY VLAVE; End Item Identification: 4R/5R COG ITEMS MANAGED BY BRASO, TURBOPROP ENGINE. 3 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.