The Valve,check, cataloged under National Stock Number 4820-01-317-4350, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Wyle Laboratories, Inc. Div Test, Engineering and Research Group. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-317-4350 |
| Primary Part Number | C11545 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Wyle Laboratories, Inc. Div Test, Engineering and Research Group |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Material | STEEL BODY |
| 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 |
|---|---|
| 604606 | Wiggins Lift Co Inc (USA) |
| C11545 PRIMARY | Wyle Laboratories, Inc. Div Test, Engineering and Research Group (USA) |
| Reference | Meaning |
|---|---|
| C11545 | C/1 Advisory reference — outside the item-of-supply concept Haldex Brake Products Corporation |
NSN 4820-01-317-4350 is a Valve,check, manufactured by Wyle Laboratories, Inc. Div Test, Engineering and Research Group, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-317-4350 has 2 manufacturer part numbers on file: 604606 (Wiggins Lift Co Inc), C11545 (Wyle Laboratories, Inc. Div Test, Engineering and Research Group).
Key specifications for C11545: Flow Control Device: DISK; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU. 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.