The Valve,check, cataloged under National Stock Number 4820-01-141-8846, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-141-8846 |
| Primary Part Number | HB91-J8B-04 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Furnished Items and Quantity | 2 NUT AND 2 TAILPIECE |
| Nominal Pipe Size Accommodated | 0.250 INCHES ALL ENDS IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | STEEL COMP 303 BODY |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HB91-J8B-04 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| HB91-J8B-04 | 5/9 Secondary reference Eaton Aerospace Llc |
| H891-J8B-04 | C/1 Advisory reference — outside the item-of-supply concept Eaton Corporation Dba Eaton Inoac Div Eaton |
| HB91-J8B-04 | 5/9 Secondary reference Eaton Corporation Dba Eaton Inoac Div Eaton |
NSN 4820-01-141-8846 is a Valve,check, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-141-8846 has 1 manufacturer part number on file: HB91-J8B-04 (Naval Sea Systems Command).
Key specifications for HB91-J8B-04: Flow Control Device: DISK; Furnished Items and Quantity: 2 NUT AND 2 TAILPIECE; Nominal Pipe Size Accommodated: 0.250 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) ALL ENDS. 11 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 4820-01-141-8846 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.