The Valve,ball, cataloged under National Stock Number 4820-01-449-5869, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is B N L Industries Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-449-5869 |
| Primary Part Number | S311-3A-01 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | B N L Industries Inc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Style | SOCKET ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | QQ-S-763, CLASS 316, COND A FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-S-763, CLASS 316, COND A FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | QQ-S-763, CLASS 316, COND A FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 316 STEM |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| 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 |
|---|---|
| S311-3A-01 PRIMARY | B N L Industries Inc (USA) |
| 803-5001003-S311 MOD | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5001003 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-449-5869 is a Valve,ball, manufactured by B N L Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-449-5869 has 2 manufacturer part numbers on file: S311-3A-01 (B N L Industries Inc), 803-5001003-S311 MOD (Naval Sea Systems Command).
Key specifications for S311-3A-01: Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: SOCKET ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU. 14 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.