The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-078-9948, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 24 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-078-9948 |
| Primary Part Number | 19395N FLGE CL HWWLN |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 4 |
| Flow Control Device | DIAPHRAGM |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Flange Thickness | 0.843 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 4.250 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| Temp Rating | 150.0 FAHRENHEIT NOMINAL DEGF |
| First End Bolt Hole Diameter | 0.562 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 3.125 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-286, CLASS A FED SPEC SINGLE MATERIAL RESPONSE OR QQ-N-286, CLASS B FED SPEC SINGLE MATERIAL RESPONSE STEM |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 10.0 TO 25.0 CAMERA MOUNT |
| Valve Loading Method | SPRING |
| Nondefinitive Spec/std Data | 1 TYPE |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Material | NICKEL ALLOY AND ALUMINUM ALLOY AND COPPER ALLOY SEAT |
| Material | NICKEL ALLOY K-500 OR NICKEL ALLOY 502 STEM |
| Media for Which Designed | WATER, SALT |
| 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 |
|---|---|
| 19395N FLGE CL HWWLN PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 19324N 1IN 10T25PSI FLGE | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| MIL-V-2042 | 4/1 Identification reference U.S. Government activity |
| 19324N | D/9 Drawing number reference only Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-01-078-9948 is a Valve,regulating,fluid Pressure, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-078-9948 has 1 manufacturer part number on file: 19395N FLGE CL HWWLN (Leslie Controls, Inc. Dba Leslie Controls Inc).
1 possible match (shared part number, not a government interchangeability claim): 2990-01-155-8025. Verify interchangeability with system specifications before substitution.
Key specifications for 19395N FLGE CL HWWLN: First End Bolt Hole Quantity: 4; Flow Control Device: DIAPHRAGM; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 24 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.