The Pressure Relf Valve, cataloged under National Stock Number 4820-01-472-6560, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Grimes Aerospace Company. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Pressure Relf Valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Grimes Aerospace Company (CAGE 72914) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-472-6560 |
| Primary Part Number | J20C30 |
| Item Name | Pressure Relf Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| J20C30 PRIMARY | Grimes Aerospace Company (USA) |
NSN 4820-01-472-6560 is a Pressure Relf Valve, manufactured by Grimes Aerospace Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-472-6560 has 1 manufacturer part number on file: J20C30 (Grimes Aerospace Company).
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.