The Valve,lift-Check, cataloged under National Stock Number 4820-00-054-3790, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-054-3790 |
| Primary Part Number | 2620-911ASSY8DL1 |
| Item Name | Valve,lift-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | RAISED STRAIGHT FIRST END |
| Bolt Circle Nominal Diameter | 6.625 INCHES FIRST END IN |
| Criticality Code Justification | ZZZY |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.875 INCHES FIRST END IN |
| Valve Size | 3.000 INCHES IN |
| Bonnet Type | INSIDE SPRING |
| Nominal Outside Diameter | 8.250 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 8 FIRST END |
| Bonnet Attachment Method | THREADED |
| Face to Face Distance | 4.500 INCHES IN |
| Raised Face Nominal Diameter | 5.000 INCHES FIRST END IN |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Height | 0.250 INCHES FIRST END IN |
| Nominal Thickness | 2.250 INCHES FIRST END IN |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 2620-911ASSY8DL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| SS845-1889538ASSY8DL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2620-911ASSY8D | 5/1 Secondary reference U.S. Government activity |
| 2620-911ASSY8D | 5/9 Secondary reference U.S. Government activity |
| SS845-1889538ASS8D | 3/1 Design control — primary reference U.S. Government activity |
NSN 4820-00-054-3790 is a Valve,lift-Check, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-054-3790 has 2 manufacturer part numbers on file: 2620-911ASSY8DL1 (Naval Inventory Control Point Mechanicsburg), SS845-1889538ASSY8DL1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 2620-911ASSY8DL1: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: RAISED STRAIGHT FIRST END; Bolt Circle Nominal Diameter: 6.625 INCHES FIRST END IN. 19 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.
NSN 4820-00-054-3790 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.