The Valve,check, cataloged under National Stock Number 4820-01-654-8377, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 12 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 | 4820-01-654-8377 |
| Primary Part Number | D81VW002C6NYW |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| Status | ACTIVE |
| Connection Style | HIGH PRESSURE FLARE (TUBE) ALL ENDS |
| Nominal Length | 417.0 MILLIMETERS ALL ENDS MM |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED CARTRIDGE ALL ENDS |
| Style Designator | SCREW-IN CARTRIDGE |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.2 INCHES ALL ENDS IN |
| Nominal Width | 118.0 MILLIMETERS ALL ENDS MM |
| Material | RUBBER PACKING |
| Thread Series Designator | NPTF ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 223.0 MILLIMETERS ALL ENDS MM |
| 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 |
|---|---|
| D81VW002C6NYW PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
NSN 4820-01-654-8377 is a Valve,check, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-654-8377 has 1 manufacturer part number on file: D81VW002C6NYW (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division).
Key specifications for D81VW002C6NYW: Connection Style: HIGH PRESSURE FLARE (TUBE) ALL ENDS; Nominal Length: 417.0 MILLIMETERS ALL ENDS MM; Mounting Position: HORIZONTAL; Connection Type: THREADED CARTRIDGE ALL ENDS. 12 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.