The Regulator,thermostatic Temperatu, cataloged under National Stock Number 4820-01-121-8107, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-121-8107 |
| Primary Part Number | 40205 PIECE 1 |
| Item Name | Regulator,thermostatic Temperatu |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Bulb Length | 12.000 INCHES NOMINAL IN |
| Bulb Diameter | 1.000 INCHES NOMINAL IN |
| Capillary Tube Length | 120.000 INCHES NOMINAL IN |
| Valve Size for Which Designed | 2.000 INCHES IN |
| Operating Temp Rating | 50.0 FAHRENHEIT MINIMUM AND 90.0 FAHRENHEIT MAXIMUM DEGF |
| Thermostat Type | BULB |
| Usage Design | CONTORL VALVE FLOW |
| 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 |
|---|---|
| 40205 PIECE 1 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| 50154-14 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 40172 PART 50154-14 | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
NSN 4820-01-121-8107 is a Regulator,thermostatic Temperatu, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-121-8107 has 2 manufacturer part numbers on file: 40205 PIECE 1 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 50154-14 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40205 PIECE 1: Bulb Length: 12.000 INCHES NOMINAL IN; Bulb Diameter: 1.000 INCHES NOMINAL IN; Capillary Tube Length: 120.000 INCHES NOMINAL IN; Valve Size for Which Designed: 2.000 INCHES IN. 7 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.