The Regulator,thermostatic Temperatu, cataloged under National Stock Number 4820-01-443-4112, 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 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-443-4112 |
| Primary Part Number | 50149-14 |
| Item Name | Regulator,thermostatic Temperatu |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Bulb Diameter | 1.125 INCHES NOMINAL IN |
| Capillary Tube Length | 120.000 INCHES NOMINAL IN |
| Valve Size for Which Designed | 2.500 INCHES IN |
| Operating Temp Rating | 75.0 FAHRENHEIT MINIMUM AND 105.0 FAHRENHEIT MAXIMUM DEGF |
| Thermostat Type | BULB |
| Usage Design | CONTROL TEMPERATURE REGULATOR VALVE |
| 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 |
|---|---|
| 50149-14 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 40056-1 | D/9 Drawing number reference only Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| 40056-1 PC 1 | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
NSN 4820-01-443-4112 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 4820-01-443-4112 has 1 manufacturer part number on file: 50149-14 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-443-4463, 4820-01-445-3141. Verify interchangeability with system specifications before substitution.
Key specifications for 50149-14: Bulb Diameter: 1.125 INCHES NOMINAL IN; Capillary Tube Length: 120.000 INCHES NOMINAL IN; Valve Size for Which Designed: 2.500 INCHES IN; Operating Temp Rating: 75.0 FAHRENHEIT MINIMUM AND 105.0 FAHRENHEIT MAXIMUM DEGF. 6 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.