The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-220-5662, 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 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-220-5662 |
| Primary Part Number | 40478-503 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 4 |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 7.875 INCHES NOMINAL IN |
| First End Style Designator | RAISED |
| Bulb Length | 15.000 INCHES NOMINAL IN |
| End Connection Quantity | 2 |
| First End Connection Type | RAISED FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Thermostatic Element | LIQUID IMMERSION TYPE |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING STEM |
| Furnished Items | INTERNAL PILOT 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 |
|---|---|
| 40478-503 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 72593 | D/9 Drawing number reference only Lawler Manufacturing Company, Inc. |
| 72593 M0DEL CTP | C/1 Advisory reference — outside the item-of-supply concept Lawler Manufacturing Company, Inc. |
| 72593 MODEL CTP-150 1 1/4IN | 5/9 Secondary reference Lawler Manufacturing Company, Inc. |
NSN 4820-01-220-5662 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 4820-01-220-5662 has 1 manufacturer part number on file: 40478-503 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40478-503: First End Bolt Hole Quantity: 4; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU; Face to Face Distance: 7.875 INCHES NOMINAL IN. 13 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.