The Seat,valve, cataloged under National Stock Number 4820-00-910-2274, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cr/pl Llc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-910-2274 |
| Primary Part Number | 301143 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cr/pl Llc |
| Status | ACTIVE |
| Body Outside Diameter | 0.785 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.457 INCHES NOMINAL IN |
| Material | PLASTIC PHENOLIC OVERALL |
| Seat Angle in Deg | 25.000 NOMINAL |
| 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 |
|---|---|
| 301143 PRIMARY | Cr/pl Llc (USA) |
| Reference | Meaning |
|---|---|
| F12010 | 5/9 Secondary reference Crane Co Div Valve Div |
NSN 4820-00-910-2274 is a Seat,valve, manufactured by Cr/pl Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-910-2274 has 1 manufacturer part number on file: 301143 (Cr/pl Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-051-5140, 1680-01-543-7551. Verify interchangeability with system specifications before substitution.
Key specifications for 301143: Overall Height: 0.145 INCHES NOMINAL IN; Body Outside Diameter: 0.785 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 0.457 INCHES NOMINAL IN. 6 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.