The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-549-4762, 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 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-549-4762 |
| Primary Part Number | 40064-407 |
| 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 |
| Renewable Seat Ring Type | THREADED |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 7.750 INCHES NOMINAL IN |
| First End Style Designator | SOCKET W/BRAZING RING |
| Temp Rating | 130.0 FAHRENHEIT MINIMUM AND 160.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | QQ-S-763, CLASS 302, 303, 304, 305, 310, OR 316 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-S-763, CLASS 302, 303, 304, 305, 310, OR 316 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-S-763, CLASS 302, 303, 304, 305, 310, OR 316 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| End Connection Quantity | 2 |
| Valve Size | 1.500 INCHES IN |
| Capillary Tube Length | 300.000 INCHES NOMINAL IN |
| Specification/standard Data | 81349 - MIL-V-19772 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | II TYPE AND 2 CLASS AND 250 SERIES AND A DESIGN |
| First End Connection Type | UNTHREADED INTERNAL PIPE |
| Temp Adjustability | ADJUSTABLE |
| Thermostatic Element | LIQUID IMMERSION TYPE |
| First End Nominal Pipe Size Accommodated | 1.500 INCHES IN |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | COPPER ALLOY 922 BODY |
| Material | STEEL CORROSION RESISTING STEM |
| Material | COPPER BULB |
| Furnished Items | TAILPIECE W/GROOVES AND UNION NUT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 40064-407 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| 40064-4 ASSY 40064-407 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| MIL-V-19772 | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-19772 | 4/1 Identification reference U.S. Government activity |
NSN 4820-01-549-4762 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 4820-01-549-4762 has 2 manufacturer part numbers on file: 40064-407 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40064-4 ASSY 40064-407 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40064-407: Flow Control Device: DISK, DUAL; Two-Way Valve Action: REVERSE ACTING; Renewable Seat Ring Type: THREADED; Second End Relationship with First End: IDENTICAL. 27 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.
NSN 4820-01-549-4762 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.