The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-422-7777, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nakakita Seisakusho Co. Ltd. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-422-7777 |
| Primary Part Number | NS 770 C NO.12 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nakakita Seisakusho Co. Ltd |
| Status | ACTIVE |
| Temp Rating | 60.0 CELSIUS NOMINAL DEGC |
| Style Designator | SPECIAL SHAPED |
| 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 |
|---|---|
| KC004553 NO.12 | Nakakita Seisakusho Co. Ltd (JPN) |
| NS 770 C NO.12 PRIMARY | Nakakita Seisakusho Co. Ltd (JPN) |
| Reference | Meaning |
|---|---|
| KC004553 | D/9 Drawing number reference only Nakakita Seisakusho Co. Ltd |
| NS 770 C NO.12 | 3/9 Design control — primary reference Nakakita Seisakusho Co. Ltd |
| KC004553 NO.12 | 5/9 Secondary reference Nakakita Seisakusho Co. Ltd |
NSN 4820-01-422-7777 is a Diaphragm,actuator Valve,special, manufactured by Nakakita Seisakusho Co. Ltd, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-422-7777 has 2 manufacturer part numbers on file: KC004553 NO.12 (Nakakita Seisakusho Co. Ltd), NS 770 C NO.12 (Nakakita Seisakusho Co. Ltd).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-422-7784, 4820-01-425-6705, 4820-01-425-6875. Verify interchangeability with system specifications before substitution.
Key specifications for NS 770 C NO.12: Temp Rating: 60.0 CELSIUS NOMINAL DEGC; Style Designator: SPECIAL SHAPED; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 2 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.