The Seat,valve, cataloged under National Stock Number 4810-00-152-7231, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-152-7231 |
| Primary Part Number | 9871P |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 1.312 INCHES NOMINAL IN |
| Flange Diameter | 8.500 INCHES NOMINAL IN |
| Body Outside Diameter | 8.062 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.875 INCHES NOMINAL IN |
| Nominal Thread Size | 0.875 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.438 INCHES NOMINAL IN |
| Thread Class | 2B SINGLE THREADED PORTION |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNF SINGLE THREADED PORTION |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 9871P PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 9871P | 3/9 Design control — primary reference U.S. Government activity |
NSN 4810-00-152-7231 is a Seat,valve, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-152-7231 has 1 manufacturer part number on file: 9871P (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 9871P: Flange Seat to Disk End Height: 1.312 INCHES NOMINAL IN; Flange Diameter: 8.500 INCHES NOMINAL IN; Body Outside Diameter: 8.062 INCHES NOMINAL IN; Thread Length: 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN. 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.