The Diaphragm,relief Valve, cataloged under National Stock Number 4920-00-511-3801, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Maney Aircraft, Inc. Dba Maney Aircraft. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-511-3801 |
| Primary Part Number | 1123-808 |
| Item Name | Diaphragm,relief Valve |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Maney Aircraft, Inc. Dba Maney Aircraft |
| Status | ACTIVE |
| FSC Application Data | 4920-00-288-1566,TESTER,PRESSURIZED CABIN LEAKAGE,AIRCRAFT |
| General Characteristics Item Description | 0.050 IN. THK,8.000 IN. DIA WITH 12 EQUALLY SPACED HOLES 0.281 IN. DIA; RUBBER IN |
| 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 |
|---|---|
| 1123-808 PRIMARY | Maney Aircraft, Inc. Dba Maney Aircraft (USA) |
| Reference | Meaning |
|---|---|
| 1123-808 | 5/9 Secondary reference U.S. Government activity |
NSN 4920-00-511-3801 is a Diaphragm,relief Valve, manufactured by Maney Aircraft, Inc. Dba Maney Aircraft, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-511-3801 has 1 manufacturer part number on file: 1123-808 (Maney Aircraft, Inc. Dba Maney Aircraft).
Key specifications for 1123-808: FSC Application Data: 4920-00-288-1566,TESTER,PRESSURIZED CABIN LEAKAGE,AIRCRAFT; General Characteristics Item Description: 0.050 IN. THK,8.000 IN. DIA WITH 12 EQUALLY SPACED HOLES 0.281 IN. DIA; RUBBER IN. 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.