The Valve Relief, cataloged under National Stock Number 4810-01-570-4811, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve Relief |
| FSC / FSG | 4810 — Valves, Powered (FSG 48) |
| Manufacturers | Johnson Controls Navy Systems, Llc (CAGE 66935); Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (CAGE 72352) |
| Parameter | Value |
|---|---|
| NSN | 4810-01-570-4811 |
| Primary Part Number | 26FD12-120/S4/SP |
| Item Name | Valve Relief |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris |
| 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 |
|---|---|
| 022-11366-000 | Johnson Controls Navy Systems, Llc (USA) |
| 26FD12-120/S4/SP PRIMARY | Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (USA) |
| 077-16668-001 ITEM 28 | Johnson Controls Navy Systems, Llc (USA) |
NSN 4810-01-570-4811 is a Valve Relief, manufactured by Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-570-4811 has 3 manufacturer part numbers on file: 022-11366-000 (Johnson Controls Navy Systems, Llc), 26FD12-120/S4/SP (Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris), 077-16668-001 ITEM 28 (Johnson Controls Navy Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-624-2687. Verify interchangeability with system specifications before substitution.
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.