The Valve,butterfly, cataloged under National Stock Number 4820-01-186-9378, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dover Resources, Inc. Div Norriseal. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-186-9378 |
| Primary Part Number | 920J048 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dover Resources, Inc. Div Norriseal |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDLE |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM A395 ALLOY 60-40-18 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B148 ALLOY 9C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B148 AALOY 9B ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 6.000 INCHES IN |
| Maximum Operating Temp | 180.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL COMP 316 STEM |
| Material | COPPER ALLOY 954 FLOW CONTROL DEVICE |
| Material | IRON CAST UNS F32800 BODY |
| Material | COPPER ALLOY 953 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 |
| Part Number | Manufacturer |
|---|---|
| 920J048 | Dover Resources, Inc. Div Norriseal (USA) |
| 920-048-6IN | Dover Resources, Inc. Div Norriseal (USA) |
| Reference | Meaning |
|---|---|
| M3020-423B-1A | 3/9 Design control — primary reference U.S. Government activity |
| 920J048 | 5/9 Secondary reference U.S. Government activity |
| 920-048 6IN | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-186-9378 is a Valve,butterfly, manufactured by Dover Resources, Inc. Div Norriseal, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-186-9378 has 2 manufacturer part numbers on file: 920J048 (Dover Resources, Inc. Div Norriseal), 920-048-6IN (Dover Resources, Inc. Div Norriseal).
Key specifications for 920J048: Furnished Items and Quantity: 1 HANDLE; Style Designator: STRAIGHT THRU; Material Document and Classification: AISI 316 ASSN STD SINGLE MATERIAL RESPONSE STEM; Material Document and Classification: ASTM A395 ALLOY 60-40-18 ASSN STD SINGLE MATERIAL RESPONSE BODY. 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.