The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-426-3048, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Triumph Thermal Systems - Maryland, Inc.. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-426-3048 |
| Primary Part Number | E131025000-1 |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Triumph Thermal Systems - Maryland, Inc. |
| Status | ACTIVE |
| Body Style | STRAIGHT THRU |
| End Connection Quantity | 3 |
| Second Connection Face to Centerline Distance | 4.360 INCHES NOMINAL IN |
| Material | ALUMINUM BODY |
| Media for Which Designed | FREON 12 USE REFRIGERANT R-12 |
| Maximum Inlet Pressure Rating | ERR-060 |
| Filter | NOT INCLUDED |
| 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 |
|---|---|
| E131025000-1 PRIMARY | Triumph Thermal Systems - Maryland, Inc. (USA) |
| 7-511A21525-3 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-511A21525-1 | 5/9 Secondary reference The Boeing Company |
| E131025000 | 5/9 Secondary reference Triumph Thermal Systems - Maryland, Inc. |
NSN 4820-01-426-3048 is a Valve,regulating,system Pressure, manufactured by Triumph Thermal Systems - Maryland, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-426-3048 has 2 manufacturer part numbers on file: E131025000-1 (Triumph Thermal Systems - Maryland, Inc.), 7-511A21525-3 (The Boeing Company).
Key specifications for E131025000-1: Body Style: STRAIGHT THRU; End Connection Quantity: 3; Second Connection Face to Centerline Distance: 4.360 INCHES NOMINAL IN; End Item Identification: USED ON AH-64A A. 7 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.