The Valve,check, cataloged under National Stock Number 4820-01-462-9918, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-462-9918 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Shape | ROUND ALL ENDS |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 1.161 INCHES IN |
| Nominal Outside Diameter | 5.000 INCHES ALL ENDS IN |
| Face to Face Distance | 6.496 INCHES IN |
| Material | STEEL BODY |
| Raised Face Nominal Diameter | 2.874 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.689 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| L1-41-RF | D/9 Drawing number reference only Bonney Forge Corp |
| L1-41 | 3/9 Design control — primary reference Bonney Forge Corp |
| L1-407 | C/1 Advisory reference — outside the item-of-supply concept Bonney Forge Corp |
NSN 4820-01-462-9918 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-462-9918: Flange Shape: ROUND ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: FLANGE ALL ENDS. 12 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.