The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-266-2090, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-266-2090 |
| Primary Part Number | 40063-403 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Flow Control Device | DISK, DUAL |
| Two-Way Valve Action | REVERSE ACTING |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | STREAMLINED WITH ONE BRAZING RING |
| Bulb Length | 1.125 INCHES MINIMUM AND 12.000 INCHES MAXIMUM IN |
| End Connection Quantity | 2 |
| Capillary Tube Length | 12.000 INCHES NOMINAL IN |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| Temp Adjustability | ADJUSTABLE |
| Thermostatic Element | LIQUID IMMERSION TYPE |
| First End Outside Diameter Tube Accommodated | 1.500 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Material | STEEL SEAT |
| Material | STEEL STEM |
| Material | COPPER BULB |
| 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 |
|---|---|
| 40063-403 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 40063-4 ASSY 40063-403 | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
NSN 4820-01-266-2090 is a Valve,regulating,temperature, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-266-2090 has 1 manufacturer part number on file: 40063-403 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40063-403: Flow Control Device: DISK, DUAL; Two-Way Valve Action: REVERSE ACTING; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 16 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.