The Disk,valve, cataloged under National Stock Number 4820-00-426-0771, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Air Liquide America Corp Ransome Div. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-426-0771 |
| Primary Part Number | SM2252 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Air Liquide America Corp Ransome Div |
| Status | ACTIVE |
| Lower Surface Width | 0.688 INCHES NOMINAL IN |
| Shoulder Height | 0.250 INCHES NOMINAL IN |
| Outside Diameter | 2.375 INCHES NOMINAL IN |
| Inside Diameter | 0.750 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| SM2252 PRIMARY | Air Liquide America Corp Ransome Div (USA) |
| Reference | Meaning |
|---|---|
| SM2252 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-426-0771 is a Disk,valve, manufactured by Air Liquide America Corp Ransome Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-426-0771 has 1 manufacturer part number on file: SM2252 (Air Liquide America Corp Ransome Div).
Key specifications for SM2252: Overall Height: 0.406 INCHES NOMINAL IN; Lower Surface Width: 0.688 INCHES NOMINAL IN; Shoulder Height: 0.250 INCHES NOMINAL IN; Outside Diameter: 2.375 INCHES NOMINAL IN. 5 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.