The Disk,valve, cataloged under National Stock Number 4820-01-075-3951, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-075-3951 |
| Primary Part Number | 72593PPIECE 16 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lawler Manufacturing Company, Inc. |
| Status | ACTIVE |
| Shank Diameter | 0.362 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 1.404 INCHES NOMINAL IN |
| Outside Diameter | 1.315 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 72593PPIECE 16 | Lawler Manufacturing Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1889 | 3/9 Design control — primary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| 1889 | C/1 Advisory reference — outside the item-of-supply concept Lawler Manufacturing Company, Inc. |
NSN 4820-01-075-3951 is a Disk,valve, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-075-3951 has 1 manufacturer part number on file: 72593PPIECE 16 (Lawler Manufacturing Company, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 6240-01-245-6967, 5930-01-264-1326, 6750-01-379-7154. Verify interchangeability with system specifications before substitution.
Key specifications for 72593PPIECE 16: Shank Diameter: 0.362 INCHES NOMINAL IN; Flange Seat to Disk End Height: 1.404 INCHES NOMINAL IN; Overall Height: 1.610 INCHES NOMINAL IN; Outside Diameter: 1.315 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.
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.