The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-138-5432, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-138-5432 |
| Primary Part Number | 920842-1 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Second End Relationship with First End | NOT IDENTICAL |
| Remote Actuation Method | DIAPHRAGM |
| Body Style | ANGLE |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Seat Angle in Deg | 37.0 |
| First End Thread Class | 2B |
| First End Style Designator | SWIVEL NUT, GAS |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| Second End Outside Diameter Hose Accommodated | 0.438 INCHES NOMINAL IN |
| Second End Style Designator | MULTI-GROOVED |
| Surface Treatment | LACQUER OUTSIDE |
| First End Outside Diameter Tube Accommodated | 0.830 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE CLASS CR SEAT |
| Material | COPPER ALLOY STEM |
| Material | RUBBER NEOPRENE FLOW CONTROL DEVICE |
| Media for Which Designed | HYDROGEN |
| Thread Size and Series/type Designator | 13/16-20 UNEF FIRST END |
| 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 |
|---|---|
| 920842-1 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| 1L350 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-138-5432 is a Valve,regulating,fluid Pressure, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-138-5432 has 1 manufacturer part number on file: 920842-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Key specifications for 920842-1: Flow Control Device: DIAPHRAGM; Second End Relationship with First End: NOT IDENTICAL; Remote Actuation Method: DIAPHRAGM; Body Style: ANGLE. 20 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.