The Seat,valve, cataloged under National Stock Number 4820-00-956-8748, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-956-8748 |
| Primary Part Number | 009-304-0025 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.125 INCHES NOMINAL IN |
| Flange Diameter | 2.503 INCHES NOMINAL IN |
| Body Outside Diameter | 2.400 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Under Flange Height | 1.187 INCHES NOMINAL IN |
| Material | PLASTIC OVERALL |
| 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 |
|---|---|
| 009-304-0025 PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| X4488-3 PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 009-304-0025 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 52-3-14 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 52-3.14 | C/1 Advisory reference — outside the item-of-supply concept Kunkle Industries Inc Lonergan Valve Div |
| B1518SA | 5/9 Secondary reference Derbyshire Machine & Tool Co |
NSN 4820-00-956-8748 is a Seat,valve, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-956-8748 has 2 manufacturer part numbers on file: 009-304-0025 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), X4488-3 (Derbyshire Machine & Tool Co).
2 possible matches (shared part number, not a government interchangeability claim): 4520-01-351-7943, 5895-01-501-5645. Verify interchangeability with system specifications before substitution.
Key specifications for 009-304-0025: Flange Seat to Disk End Height: 0.125 INCHES NOMINAL IN; Flange Diameter: 2.503 INCHES NOMINAL IN; Body Outside Diameter: 2.400 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 7 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.