The Valve,check, cataloged under National Stock Number 4820-01-223-8645, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-223-8645 |
| Primary Part Number | 5081-001 300 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND ALL ENDS |
| Furnished Items and Quantity | 1 HANDWHEEL |
| Flange Face Design | PLAIN ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 3.000 INCHES IN |
| Second Connection Face to Centerline Distance | 5.375 INCHES IN |
| Nominal Outside Diameter | 6.625 INCHES ALL ENDS IN |
| First Connection Face to Centerline Distance | 12.000 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY 400 STEM |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 5081-001 300 PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 54-131F 3IN BRZ 45DEG PRIMARY | Tate Andale, Llc (USA) |
| Reference | Meaning |
|---|---|
| 5081 | 5/9 Secondary reference U.S. Government activity |
| 5081 3IN.45DEG | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 508100A300 | 5/9 Secondary reference Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| 5081 | 5/9 Secondary reference Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
NSN 4820-01-223-8645 is a Valve,check, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-223-8645 has 2 manufacturer part numbers on file: 5081-001 300 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 54-131F 3IN BRZ 45DEG (Tate Andale, Llc).
Key specifications for 5081-001 300: Flow Control Device: DISK; Flange Shape: ROUND ALL ENDS; Furnished Items and Quantity: 1 HANDWHEEL; Flange Face Design: PLAIN ALL ENDS. 16 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.