The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-485-9203, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-485-9203 |
| Primary Part Number | 25AUB-Z3-1.5 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Regulation Type | 1ST STAGE MANUAL, 2ND STAGE AUTOMATIC |
| Valve Loading Method | SPRING |
| Material | STEEL CORROSION RESISTING SEAT |
| Media for Which Designed | WATER |
| 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 |
|---|---|
| 25AUB-Z3-1.5 PRIMARY | Watts Regulator Company (USA) |
| Reference | Meaning |
|---|---|
| 93107902 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-485-9203 is a Valve,regulating,fluid Pressure, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-485-9203 has 1 manufacturer part number on file: 25AUB-Z3-1.5 (Watts Regulator Company).
Key specifications for 25AUB-Z3-1.5: Regulation Type: 1ST STAGE MANUAL, 2ND STAGE AUTOMATIC; Valve Loading Method: SPRING; Special Features: E/I;PORTABLE BATH UNIT NSN 4510-01-163-6775; End Item Identification: ALL SOURCE ANALYSIS SYSTEM. 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.