The Seat,valve, cataloged under National Stock Number 4820-00-571-3736, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is General Electric Company. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-571-3736 |
| Primary Part Number | 894B361PC4 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 1.060 INCHES NOMINAL IN |
| Flange Diameter | 6.735 INCHES MINIMUM AND 6.736 INCHES MAXIMUM IN |
| Body Outside Diameter | 5.440 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | MIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE |
| Material Document and Classification | MIL-S-18410,CLASS A MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Body Inside Diameter | 4.297 INCHES NOMINAL IN |
| Seat Radius | 0.180 INCHES NOMINAL IN |
| Under Flange Height | 1.320 INCHES NOMINAL IN |
| Material | STEEL BODY |
| Material | COBALT ALLOY FACE |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| 894B361PC4 PRIMARY | General Electric Company (USA) |
NSN 4820-00-571-3736 is a Seat,valve, manufactured by General Electric Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-571-3736 has 1 manufacturer part number on file: 894B361PC4 (General Electric Company).
Key specifications for 894B361PC4: Flange Seat to Disk End Height: 1.060 INCHES NOMINAL IN; Flange Diameter: 6.735 INCHES MINIMUM AND 6.736 INCHES MAXIMUM IN; Body Outside Diameter: 5.440 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 12 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.