The Valve,check, cataloged under National Stock Number 4820-00-835-9814, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-835-9814 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | CANCELLED |
| Flow Control Device | DISK |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Thread Class | 3B ALL ENDS |
| Material | PLASTIC FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | UNF ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 4820008359814 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| MIL-DTL-7899 | 4/1 Identification reference U.S. Government activity |
| 1111-517710 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
| MS28882A-401 | E/8 Replaced / superseded reference U.S. Government activity |
| MS28882-4 | 5/9 Secondary reference U.S. Government activity |
| MS28883-4 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MS28882A-4 | 2/2 Government specification standardization U.S. Government activity |
| 1111-517710 | 5/9 Secondary reference U.S. Government activity |
| MIL-V-7899 | 5/9 Secondary reference U.S. Government activity |
| 4C230 | 5/9 Secondary reference U.S. Government activity |
| K1377-4 | 5/9 Secondary reference Essex Industries, Inc. Dba Essex Industries |
| 593-4D1 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
NSN 4820-00-835-9814 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: cancelled.
1 possible match (shared part number, not a government interchangeability claim): 4140-01-262-5369. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-835-9814: Flow Control Device: DISK; Connection Style: GASKET SEAL (BOSS) ALL ENDS; Mounting Position: HORIZONTAL; Connection Type: THREADED INTERNAL BOSS ALL ENDS. 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.
NSN 4820-00-835-9814 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.