The Piston,valve, cataloged under National Stock Number 4820-01-440-1342, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Magnatrol Valve Corp Dba Magnatrol Valve Corp. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-440-1342 |
| Primary Part Number | E2-2123 ITEM 18 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Magnatrol Valve Corp Dba Magnatrol Valve Corp |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Valve Model Number for Which Designed | 42-AR-37 |
| Valve Size for Which Designed | 2.000 INCHES IN |
| Valve Design Control Activity | 76093 |
| 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 |
|---|---|
| E2-2123 ITEM 18 PRIMARY | Magnatrol Valve Corp Dba Magnatrol Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| E2-2123 | D/9 Drawing number reference only Magnatrol Valve Corp Dba Magnatrol Valve Corp |
| 42-AR-37, 120 AC | 5/1 Secondary reference Magnatrol Valve Corp Dba Magnatrol Valve Corp |
| E2-2123 PC18 | C/1 Advisory reference — outside the item-of-supply concept Magnatrol Valve Corp Dba Magnatrol Valve Corp |
NSN 4820-01-440-1342 is a Piston,valve, manufactured by Magnatrol Valve Corp Dba Magnatrol Valve Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-440-1342 has 1 manufacturer part number on file: E2-2123 ITEM 18 (Magnatrol Valve Corp Dba Magnatrol Valve Corp).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-440-1343, 4810-01-440-7487. Verify interchangeability with system specifications before substitution.
Key specifications for E2-2123 ITEM 18: Valve Type for Which Designed: GLOBE; Valve Model Number for Which Designed: 42-AR-37; Valve Size for Which Designed: 2.000 INCHES IN; Valve Design Control Activity: 76093. 4 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.