The Valve,butterfly, cataloged under National Stock Number 4820-01-313-0558, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-313-0558 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A395, 60-40-18 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A494, -30C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | QQ-N-286, CLASS A FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Mounting Facility | LUG(S) |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | NICKEL ALLOY K-500 STEM |
| Material | IRON CAST UNS F32800 BODY |
| 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 |
|---|---|
| R285B-166AA-2MM/920L178 10IN | 3/9 Design control — primary reference U.S. Government activity |
| R2858-166AA-2MM | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-313-0558 is a Valve,butterfly, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-313-0558: Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM A395, 60-40-18 ASSN STD SINGLE MATERIAL RESPONSE BODY; Material Document and Classification: ASTM A494, -30C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE; Material Document and Classification: QQ-N-286, CLASS A FED SPEC SINGLE MATERIAL RESPONSE STEM. 11 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.