The Valve,check, cataloged under National Stock Number 4820-01-654-0465, 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12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-654-0465 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Style | SWIVEL NUT, FLARELESS (TUBE) SECOND END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 2.0 INCHES IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.005 INCHES ALL ENDS IN |
| Seat Angle | 2.0 DEGREES ALL ENDS |
| Face to Face Distance | 1.041 INCHES IN |
| Thread Quantity Per Inch | 0.15 ALL ENDS |
| Material | STEEL BODY |
| Thread Series Designator | UNJS ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| 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 |
| Reference | Meaning |
|---|---|
| 4820PL2210951 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4C5220 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-654-0465 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-654-0465: Connection Style: SWIVEL NUT, FLARELESS (TUBE) SECOND END; Connection Type: THREADED EXTERNAL PIPE SECOND END; Style Designator: STRAIGHT THRU FLANGED ENDS; Valve Size: 2.0 INCHES IN. 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.
NSN 4820-01-654-0465 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.