The Valve,check, cataloged under National Stock Number 4820-01-123-6492, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec. Government technical data includes 15 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 | 4820-01-123-6492 |
| Primary Part Number | RD24717-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Renewable Seat Ring Type | BONDED |
| Surface Treatment Document and Classification | MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| Supplementary Features | RD24717-1 REPLACES RD24717; SPRING,RD24727 CH TO RD24727-01 UPDATING THE T55-L-11 LUBE AND SCA PUMP,RR35340B,FROM 1-3 TO 3-5 PSI |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | QQ-A-225/8 ALLOY 6061 T6 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-A-225/8 ALLOY 6061 T6 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | QQ-A-225/8 ALLOY 6061 T6 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Disk Loading Method | SPRING |
| Surface Treatment | ANODIZE |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Material | ALUMINUM ALLOY 6061 FLOW CONTROL DEVICE |
| Material | ALUMINUM ALLOY 6061 BODY |
| Material | ALUMINUM ALLOY 6061 SEAT |
| 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 |
|---|---|
| RD24717-1 PRIMARY | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA) |
NSN 4820-01-123-6492 is a Valve,check, manufactured by Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-123-6492 has 1 manufacturer part number on file: RD24717-1 (Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec).
Key specifications for RD24717-1: Flow Control Device: POPPET; Renewable Seat Ring Type: BONDED; Surface Treatment Document and Classification: MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE; Supplementary Features: RD24717-1 REPLACES RD24717; SPRING,RD24727 CH TO RD24727-01 UPDATING THE T55-L-11 LUBE AND SCA PUMP,RR35340B,FROM 1-3 TO 3-5 PSI. 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.
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.