The Valve,restrictor Check, cataloged under National Stock Number 4820-00-882-5585, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Preece Inc Decca Valves Div. Government technical data includes 24 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-882-5585 |
| Primary Part Number | B1038-9 |
| Item Name | Valve,restrictor Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Preece Inc Decca Valves Div |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | FLARELESS ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Minimum Operating Temp | -65.0 FAHRENHEIT DEGF |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | QQ-A-225/6, ALLOY 2024, T351 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-S-764,TYPE303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 20 SECOND END |
| Thread Quantity Per Inch | 18 FIRST END |
| Material | STEEL COMP 303 FLOW CONTROL DEVICE |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | ALUMINUM ALLOY 2024 SEAT |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) 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 |
|---|---|
| B1038-9 PRIMARY | Preece Inc Decca Valves Div (USA) |
| 2-43928 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6F2196 | 3/2 Design control — primary reference U.S. Government activity |
| 2-43928 | 7/9 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 2-43928 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
NSN 4820-00-882-5585 is a Valve,restrictor Check, manufactured by Preece Inc Decca Valves Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-882-5585 has 2 manufacturer part numbers on file: B1038-9 (Preece Inc Decca Valves Div), 2-43928 (Northrop Grumman Systems Corporation).
Key specifications for B1038-9: Flow Control Device: POPPET; Connection Style: FLARELESS ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Minimum Operating Temp: -65.0 FAHRENHEIT DEGF. 24 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.