The Valve,butterfly, cataloged under National Stock Number 4820-01-323-8593, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-323-8593 |
| Primary Part Number | R3011-22AA-1AM 2IN |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dover Resources, Inc. Div Norriseal |
| Status | ACTIVE |
| Minimum Operating Temp | 20.0 FAHRENHEIT DEGF |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | ASTM A395 ALLOY 60-40-18 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A296 GRADE CF8M ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 2.000 INCHES IN |
| Maximum Operating Temp | 180.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Facility | LUG(S) |
| Material | STEEL COMP 316 STEM |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| R3011-22AA-1AM 2IN PRIMARY | Dover Resources, Inc. Div Norriseal (USA) |
| Reference | Meaning |
|---|---|
| R3011-22AA-1AM 2IN | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-323-8593 is a Valve,butterfly, manufactured by Dover Resources, Inc. Div Norriseal, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-323-8593 has 1 manufacturer part number on file: R3011-22AA-1AM 2IN (Dover Resources, Inc. Div Norriseal).
Key specifications for R3011-22AA-1AM 2IN: Minimum Operating Temp: 20.0 FAHRENHEIT DEGF; Style Designator: STRAIGHT THRU; Material Document and Classification: AISI 316 ASSN STD SINGLE MATERIAL RESPONSE SEAT; 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.