The Seat,valve, cataloged under National Stock Number 4820-01-218-9508, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Morse Diving, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-218-9508 |
| Primary Part Number | 8800-20-22 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Morse Diving, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 8800-20-22 PRIMARY | Morse Diving, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3900-39 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-218-9508 is a Seat,valve, manufactured by Morse Diving, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-218-9508 has 1 manufacturer part number on file: 8800-20-22 (Morse Diving, Inc.).
Key specifications for 8800-20-22: End Item Identification: DEMAND REGULATOR. 0 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.