The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-576-2428, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-576-2428 |
| Primary Part Number | 40446-207 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 6 |
| Flow Control Device | DISK |
| Valve Stem Design | SINGLE SEAT |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 11.750 INCHES NOMINAL IN |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Flange Thickness | 0.938 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 2.875 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| Temp Rating | 165.0 FAHRENHEIT NOMINAL DEGF |
| First End Bolt Hole Diameter | 0.688 INCHES NOMINAL IN |
| Material Document and Classification | UNABLE TO DECODE |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 100.0 TO 150.0 CAMERA MOUNT |
| Valve Size | 2.500 INCHES IN |
| Valve Loading Method | SPRING |
| Departure From Cited Designator | 250.0 |
| Specification/standard Data | 81346-ASTM F1370 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| Nondefinitive Spec/std Data | 1 TYPE AND J SIZE AND F END AND 2 RATING AND X RANGE |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | COPPER ALLOY 922 BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE |
| Media for Which Designed | WATER, SALT |
| End Connection Spec/std | MIL-F-20042 |
| 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 |
|---|---|
| 40446-2 ASSEMBLY 40446-207 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| 40446-207 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| F1370 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-576-2428 is a Valve,regulating,fluid Pressure, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-576-2428 has 2 manufacturer part numbers on file: 40446-2 ASSEMBLY 40446-207 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40446-207 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40446-207: First End Bolt Hole Quantity: 6; Flow Control Device: DISK; Valve Stem Design: SINGLE SEAT; Body Style: STRAIGHT THRU. 26 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.