The Valve,check, cataloged under National Stock Number 4820-01-423-2956, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Schroeder Industries Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-423-2956 |
| Primary Part Number | A-LFT-880 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Schroeder Industries Llc |
| Status | ACTIVE |
| Material | COPPER ALLOY BODY |
| 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 |
|---|---|
| D-5705 IT-H | Schroeder Industries Llc (USA) |
| A-LFT-880 PRIMARY | Schroeder Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| D-5705 | D/9 Drawing number reference only Schroeder Industries Llc |
NSN 4820-01-423-2956 is a Valve,check, manufactured by Schroeder Industries Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-423-2956 has 2 manufacturer part numbers on file: D-5705 IT-H (Schroeder Industries Llc), A-LFT-880 (Schroeder Industries Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-423-2983, 4330-01-429-9638. Verify interchangeability with system specifications before substitution.
Key specifications for A-LFT-880: End Item Identification: NAVY WEAPON SYSTEM CODE TH STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: COPPER ALLOY BODY. 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.