The Seat,valve, cataloged under National Stock Number 4820-00-956-8932, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dover Fluid Management, Inc. Div Norriseal. Government technical data includes 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-956-8932 |
| Primary Part Number | 52730A142 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dover Fluid Management, Inc. Div Norriseal |
| Status | ACTIVE |
| Body Outside Diameter | 6.865 INCHES MINIMUM AND 6.873 INCHES MAXIMUM IN |
| Style Designator | PLAIN |
| Material | RUBBER BUNA N SEAT |
| 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 |
|---|---|
| 52730A142 | Dover Fluid Management, Inc. Div Norriseal (USA) |
| Reference | Meaning |
|---|---|
| 52730A142 | 5/9 Secondary reference Dover Resources, Inc. Div Norriseal |
| 52730A142 | 3/9 Design control — primary reference U.S. Government activity |
| 6870-18A | 5/9 Secondary reference U.S. Government activity |
| 730A142 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-956-8932 is a Seat,valve, manufactured by Dover Fluid Management, Inc. Div Norriseal, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-956-8932 has 1 manufacturer part number on file: 52730A142 (Dover Fluid Management, Inc. Div Norriseal).
Key specifications for 52730A142: Body Outside Diameter: 6.865 INCHES MINIMUM AND 6.873 INCHES MAXIMUM IN; Style Designator: PLAIN; Special Features: SEATS MUST BE COLOR STRIPED FOR MATERIAL PER NORRIS SPEC 815-001; Material: RUBBER BUNA N SEAT. 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.