The Valve,check, cataloged under National Stock Number 4820-00-765-9590, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bae Systems Australia Limited. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-765-9590 |
| Primary Part Number | 15009378 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bae Systems Australia Limited |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| 15009378 | Bae Systems Australia Limited (AUS) |
| 8744012 | Relli Technology, Inc Dba Relli Technology Inc (USA) |
| Reference | Meaning |
|---|---|
| 4820007659590 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 1111-586052 | 5/9 Secondary reference U.S. Government activity |
| 55-6700-1 | 3/2 Design control — primary reference U.S. Government activity |
| 2910007659590 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 1111-586052 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
| 55-6700-1 | 5/9 Secondary reference U.S. Government activity |
| 8744012 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4820-00-765-9590 is a Valve,check, manufactured by Bae Systems Australia Limited, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-765-9590 has 2 manufacturer part numbers on file: 15009378 (Bae Systems Australia Limited), 8744012 (Relli Technology, Inc Dba Relli Technology Inc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-643-1140. Verify interchangeability with system specifications before substitution.
Key specifications for 15009378: Flow Control Device: DISK; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 10 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.