The Ball,check, cataloged under National Stock Number 4820-01-503-8206, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dev-Air Corporation. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-503-8206 |
| Primary Part Number | CM-277-2-1CAV |
| Item Name | Ball,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dev-Air Corporation |
| Status | ACTIVE |
| 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 |
|---|---|
| CM-277-2-1CAV | Dev-Air Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1E9109-0733-01 ITEM 12 | 5/2 Secondary reference U.S. Government activity |
| CM-277-2-1CAV | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-503-8206 is a Ball,check, manufactured by Dev-Air Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-503-8206 has 1 manufacturer part number on file: CM-277-2-1CAV (Dev-Air Corporation).
Key specifications for CM-277-2-1CAV: Special Features: FOUND ON THE HEAD CUSHION OF THE N5F MODEL OF HYDRO-LINE'S N5 SERIES CYLINDERS; VITON SEALS; Part Name Assigned by Controlling Agency: BALL CHECK; End Item Identification: 3040-01-503-6305 CYLINDER ASSEMBLY, ACTUATING, LINEAR. 0 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.