The Valve,check, cataloged under National Stock Number 4820-01-671-9171, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker Hannifin Corporation Div Hydraulic Filter Division, Fairey Arlon Operations. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-671-9171 |
| Primary Part Number | N5A125-5.0N |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker Hannifin Corporation Div Hydraulic Filter Division, Fairey Arlon Operations |
| Status | ACTIVE |
| Nominal Length | 93.5 MILLIMETERS ALL ENDS MM |
| Minimum Operating Temp | -40.0 CELSIUS DEGC |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 420.0 BAR MAXIMUM SINGLE RESPONSE |
| Maximum Operating Temp | 93.3 CELSIUS SINGLE RESPONSE DEGC |
| Surface Treatment | ZINC |
| Material | ALUMINUM OVERALL |
| 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 |
|---|---|
| N5A125-5.0N PRIMARY | Parker Hannifin Corporation Div Hydraulic Filter Division, Fairey Arlon Operations (USA) |
NSN 4820-01-671-9171 is a Valve,check, manufactured by Parker Hannifin Corporation Div Hydraulic Filter Division, Fairey Arlon Operations, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-671-9171 has 1 manufacturer part number on file: N5A125-5.0N (Parker Hannifin Corporation Div Hydraulic Filter Division, Fairey Arlon Operations).
Key specifications for N5A125-5.0N: Nominal Length: 93.5 MILLIMETERS ALL ENDS MM; Minimum Operating Temp: -40.0 CELSIUS DEGC; Style Designator: SCREW-IN CARTRIDGE; Operating Pressure: 420.0 BAR MAXIMUM SINGLE RESPONSE. 7 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.