The Trap,steam, cataloged under National Stock Number 4730-01-203-1297, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-203-1297 |
| Primary Part Number | 811 1.00IPS 250 PSI |
| Item Name | Trap,steam |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Armstrong International Inc Dba Armstrong Machine Works |
| Status | ACTIVE |
| Design Type | INVERTED BUCKET |
| Inlet Connection Type | FEMALE IRON PIPE |
| Thread Direction | RIGHT-HAND BOTH INLET AND OUTLET |
| Maximum Steam Working Pressure | ERR-060 |
| Screw Thread Series Designator | NPT BOTH INLET AND OUTLET |
| Body Design | STRAIGHT PATTERN |
| Rated Capacity at Maximum Working Pressure | 760.0 POUNDS OF WATER PER HOUR LBS |
| Material | IRON BODY |
| Material | STEEL CORROSION RESISTING WORKING PARTS |
| Outlet Connection Type | FEMALE IRON PIPE |
| 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 |
|---|---|
| 811 1.00IPS 250 PSI PRIMARY | Armstrong International Inc Dba Armstrong Machine Works (USA) |
| Reference | Meaning |
|---|---|
| 811 1.00IPS250P | C/1 Advisory reference — outside the item-of-supply concept Armstrong International Inc Dba Armstrong Machine Works |
NSN 4730-01-203-1297 is a Trap,steam, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-203-1297 has 1 manufacturer part number on file: 811 1.00IPS 250 PSI (Armstrong International Inc Dba Armstrong Machine Works).
Key specifications for 811 1.00IPS 250 PSI: Design Type: INVERTED BUCKET; Inlet Connection Type: FEMALE IRON PIPE; Thread Direction: RIGHT-HAND BOTH INLET AND OUTLET; Maximum Steam Working Pressure: ERR-060. 10 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.