The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-373-0519, 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 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-373-0519 |
| Primary Part Number | 1/4-263A,10-125 PSIG |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Second End Relationship with First End | IDENTICAL |
| Third End Relationship with Preceding Ends | IDENTICAL WITH FIRST END |
| Temp Rating | 120.0 FAHRENHEIT NOMINAL DEGF |
| End Connection Quantity | 3 |
| Outlet Pressure Range | 10.0 TO 125.0 CAMERA MOUNT |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | COPPER ALLOY BODY |
| Maximum Inlet Pressure Rating | ERR-060 |
| 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 |
|---|---|
| 1/4-263A,10-125 PSIG PRIMARY | Watts Regulator Company (USA) |
| Reference | Meaning |
|---|---|
| 6558513 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 4820-01-373-0519 is a Valve,regulating,fluid Pressure, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-373-0519 has 1 manufacturer part number on file: 1/4-263A,10-125 PSIG (Watts Regulator Company).
Key specifications for 1/4-263A,10-125 PSIG: Second End Relationship with First End: IDENTICAL; Third End Relationship with Preceding Ends: IDENTICAL WITH FIRST END; Temp Rating: 120.0 FAHRENHEIT NOMINAL DEGF; End Connection Quantity: 3. 8 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.