The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-00-141-0555, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pall Aeropower Corporation. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-141-0555 |
| Primary Part Number | AC9347-41 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Flow Control Device | PISTON, SPRING LOADED |
| Temp Rating | -65.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 440C ASSN STD SINGLE MATERIAL RESPONSE OR SAE 51440C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Temp Adjustability | NOT ADJUSTABLE |
| Surface Treatment | ANODIZE OUTSIDE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | ALUMINUM ALLOY BODY |
| Material | STEEL COMP 440C FLOW CONTROL DEVICE |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Valve Discharge Flow Rate | 84.0 GALLONS PER MINUTE |
| 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 |
|---|---|
| AC9347-41 PRIMARY | Pall Aeropower Corporation (USA) |
| Reference | Meaning |
|---|---|
| AC9347-41 | 5/9 Secondary reference Columbia Products |
NSN 4820-00-141-0555 is a Valve,relief,pressure and Temper, manufactured by Pall Aeropower Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-141-0555 has 1 manufacturer part number on file: AC9347-41 (Pall Aeropower Corporation).
Key specifications for AC9347-41: Flow Control Device: PISTON, SPRING LOADED; Temp Rating: -65.0 FAHRENHEIT AND 300.0 FAHRENHEIT DEGF; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 440C ASSN STD SINGLE MATERIAL RESPONSE OR SAE 51440C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE; Temp Adjustability: NOT ADJUSTABLE. 10 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.