The Disk,valve, cataloged under National Stock Number 4820-00-238-5283, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-238-5283 |
| Primary Part Number | 063073 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| Outside Diameter | 4.553 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 1.270 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 063073-AP | Acme Products & Engineering Inc (USA) |
| 063073 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| Reference | Meaning |
|---|---|
| 063072 | 5/9 Secondary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
NSN 4820-00-238-5283 is a Disk,valve, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-238-5283 has 2 manufacturer part numbers on file: 063073-AP (Acme Products & Engineering Inc), 063073 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
Key specifications for 063073: Overall Height: 0.245 INCHES NOMINAL IN; Outside Diameter: 4.553 INCHES NOMINAL IN; Style Designator: PLAIN; Inside Diameter: 1.270 INCHES NOMINAL IN. 4 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 4820-00-238-5283 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.