The Trap,moisture, cataloged under National Stock Number 4730-01-421-1507, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Armstrong International Inc Dba Armstrong Machine Works. Government technical data includes 4 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 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 | 4730-01-421-1507 |
| Primary Part Number | 11-LD |
| Item Name | Trap,moisture |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Armstrong International Inc Dba Armstrong Machine Works |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING FLOAT ARM |
| Material | STEEL CORROSION RESISTING BODY |
| Material | STEEL CORROSION RESISTING VALVE |
| Material | STEEL CORROSION RESISTING FLOAT |
| 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 |
|---|---|
| 11-LD PRIMARY | Armstrong International Inc Dba Armstrong Machine Works (USA) |
NSN 4730-01-421-1507 is a Trap,moisture, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-421-1507 has 1 manufacturer part number on file: 11-LD (Armstrong International Inc Dba Armstrong Machine Works).
1 possible match (shared part number, not a government interchangeability claim): 6525-01-718-8821. Verify interchangeability with system specifications before substitution.
Key specifications for 11-LD: Material: STEEL CORROSION RESISTING FLOAT ARM; Material: STEEL CORROSION RESISTING BODY; Material: STEEL CORROSION RESISTING VALVE; Material: STEEL CORROSION RESISTING FLOAT. 4 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.