The Valve,ball, cataloged under National Stock Number 4820-01-191-3810, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-191-3810 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Style | SOCKET ALL ENDS |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM B-371 ALLOY 694 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM B-16 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B-584 ALLOY 694 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 0.313 INCHES ALL ENDS IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Operating Pressure | 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Material | COPPER ALLOY 694 STEM |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE PACKING |
| Material | COPPER ALLOY 844 BODY |
| Material | COPPER ALLOY 360 FLOW CONTROL DEVICE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| 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 |
| Reference | Meaning |
|---|---|
| S-595-Y 1/2IN | 3/9 Design control — primary reference Nibco Inc |
| S-595-Y 1/2IN | C/1 Advisory reference — outside the item-of-supply concept Nibco Inc Chemtrol Div |
| S-595-Y 1/2IN | 5/9 Secondary reference Nibco Inc |
NSN 4820-01-191-3810 is a Valve,ball, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-191-3810: Connection Style: SOCKET ALL ENDS; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM B-371 ALLOY 694 ASSN STD SINGLE MATERIAL RESPONSE STEM. 17 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.