The Valve,check, cataloged under National Stock Number 4820-01-481-5983, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bonney Forge Valve. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-481-5983 |
| Primary Part Number | 1 1/4IN-H62SW |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bonney Forge Valve |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Renewable Seat Ring Type | BOLTED |
| Nominal Pipe Size Accommodated | 1.181 INCHES ALL ENDS IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material | STEEL COMP 1010 BODY |
| Material | STEEL AND COBALT SEAT |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 1 1/4IN-H62SW PRIMARY | Bonney Forge Valve (USA) |
| Reference | Meaning |
|---|---|
| H-62 | D/9 Drawing number reference only Bonney Forge Valve |
NSN 4820-01-481-5983 is a Valve,check, manufactured by Bonney Forge Valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-481-5983 has 1 manufacturer part number on file: 1 1/4IN-H62SW (Bonney Forge Valve).
Key specifications for 1 1/4IN-H62SW: Flow Control Device: DISK; Renewable Seat Ring Type: BOLTED; Nominal Pipe Size Accommodated: 1.181 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) ALL ENDS. 10 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.