The Valve,check, cataloged under National Stock Number 4820-01-533-0442, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker Hannifin Limited. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-533-0442 |
| Primary Part Number | CPD084P6B |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker Hannifin Limited |
| Status | ACTIVE |
| Connection Style | PLAIN (SCREW-IN CARTRIDGE) FIRST END |
| Minimum Operating Temp | -40.0 CELSIUS DEGC |
| Connection Type | THREADED CARTRIDGE FIRST END |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Maximum Operating Temp | 93.3 CELSIUS SINGLE RESPONSE DEGC |
| Media for Which Designed | HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 16 FIRST END |
| Material | STEEL BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Thread Series Designator | UNF FIRST END |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| CPD084P6B | Parker Hannifin Limited (GBR) |
| Reference | Meaning |
|---|---|
| CPD084P6B | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-533-0442 is a Valve,check, manufactured by Parker Hannifin Limited, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-533-0442 has 1 manufacturer part number on file: CPD084P6B (Parker Hannifin Limited).
Key specifications for CPD084P6B: Connection Style: PLAIN (SCREW-IN CARTRIDGE) FIRST END; Minimum Operating Temp: -40.0 CELSIUS DEGC; Connection Type: THREADED CARTRIDGE FIRST END; Style Designator: SCREW-IN CARTRIDGE. 15 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.