The Parts Kit,stop-Check Valve, cataloged under National Stock Number 4820-01-547-1838, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-547-1838 |
| Primary Part Number | A12-7533-702 |
| Item Name | Parts Kit,stop-Check Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Furnished Items | 1EA GLOBE DISC; 1EA GLOBE SEAT; 1EA THRUST PAD; 1EA DISC UNION |
| 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 |
|---|---|
| 7490-703 IT 31 P/N A12-7533-702 | Velan Valve Corp. (USA) |
| A12-7533-702 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 7490-703 | D/9 Drawing number reference only Velan Valve Corp. |
NSN 4820-01-547-1838 is a Parts Kit,stop-Check Valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-547-1838 has 2 manufacturer part numbers on file: 7490-703 IT 31 P/N A12-7533-702 (Velan Valve Corp.), A12-7533-702 (Velan Valve Corp.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-547-1842. Verify interchangeability with system specifications before substitution.
Key specifications for A12-7533-702: Special Features: NHA: 4820-01-547-1831, 4 INCH STOP-CHECK GLOBE VALVE IN; Furnished Items: 1EA GLOBE DISC; 1EA GLOBE SEAT; 1EA THRUST PAD; 1EA DISC UNION; Part Name Assigned by Controlling Agency: STEM-DISC ASSEMBLY; End Item Identification: LHD8. 1 specification is 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.