The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-112-6254, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Control Devices, Incorporated. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-112-6254 |
| Primary Part Number | LGM20AF-T |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Control Devices, Incorporated |
| Status | CANCELLED |
| Second End Relationship with First End | IDENTICAL |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| Temp Rating | 400.0 FAHRENHEIT NOMINAL DEGF |
| Manual Control Method | TEE HANDLE |
| Valve Loading Method | SPRING |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | AIR |
| Maximum Inlet Pressure Rating | ERR-060 |
| Filter | NOT INCLUDED |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| LGM20AF-T PRIMARY | Control Devices, Incorporated (USA) |
| Reference | Meaning |
|---|---|
| LGM20AM-T | 3/9 Design control — primary reference Control Devices, Incorporated |
| 100224 | 5/9 Secondary reference Melley Industries Inc |
| LGM-20T | 5/9 Secondary reference Control Devices, Incorporated |
| LGM-20 | 5/9 Secondary reference Control Devices, Incorporated |
NSN 4820-01-112-6254 is a Valve,regulating,fluid Pressure, manufactured by Control Devices, Incorporated, classified under FSC 4820, Valves, Nonpowered. Status: cancelled.
NSN 4820-01-112-6254 has 1 manufacturer part number on file: LGM20AF-T (Control Devices, Incorporated).
3 possible matches (shared part number, not a government interchangeability claim): 5342-01-181-7708, 6645-01-440-7145, 3655-01-690-0659. Verify interchangeability with system specifications before substitution.
Key specifications for LGM20AF-T: Second End Relationship with First End: IDENTICAL; Regulation Type: AUTOMATIC SINGLE STAGE; Temp Rating: 400.0 FAHRENHEIT NOMINAL DEGF; Manual Control Method: TEE HANDLE. 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.
NSN 4820-01-112-6254 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.