The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-169-0599, 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 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 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 | 4820-01-169-0599 |
| Primary Part Number | R364-2 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Seat Angle in Deg | 45.0 |
| First End Thread Class | 3B |
| First End Style Designator | FLARE |
| Temp Rating | 40.0 FAHRENHEIT MINIMUM AND 120.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 0.0 TO 125.0 CAMERA MOUNT |
| Valve Loading Method | SPRING |
| Mounting Facility | PANEL |
| First End Connection Type | THREADED INTERNAL TUBE |
| First End Outside Diameter Tube Accommodated | 0.313 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | AIR |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 1/2-20 UNF 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 |
|---|---|
| R364-2 PRIMARY | Watts Regulator Company (USA) |
NSN 4820-01-169-0599 is a Valve,regulating,fluid Pressure, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-169-0599 has 1 manufacturer part number on file: R364-2 (Watts Regulator Company).
1 possible match (shared part number, not a government interchangeability claim): 5915-01-196-9619. Verify interchangeability with system specifications before substitution.
Key specifications for R364-2: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 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.