The Seat,valve, cataloged under National Stock Number 4820-01-413-4054, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 4 specifications, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-413-4054 |
| Primary Part Number | P1500A-00 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Flange Diameter | 3.550 INCHES MINIMUM AND 3.640 INCHES MAXIMUM IN |
| Body Outside Diameter | 2.875 INCHES NOMINAL IN |
| Material | COPPER ALLOY SEAT |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| NAP-704 PC 12 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| P1500A-00 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| P1500A | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| NAP-704 PC 12 | 5/9 Secondary reference Atlas Valve Co |
| NAP 704 | D/9 Drawing number reference only Atlas Valve Co |
| P1500A | 5/9 Secondary reference Atlas Valve Co |
NSN 4820-01-413-4054 is a Seat,valve, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-413-4054 has 2 manufacturer part numbers on file: NAP-704 PC 12 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), P1500A-00 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for P1500A-00: Flange Diameter: 3.550 INCHES MINIMUM AND 3.640 INCHES MAXIMUM IN; Body Outside Diameter: 2.875 INCHES NOMINAL IN; Special Features: UPPER;VALVE SIZE 3IN IN; End Item Identification: NIMITZ CLASS CVN. 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.