The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-255-9600, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-255-9600 |
| Primary Part Number | 40054-04/50002-26 |
| 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 | DIAPHRAGM |
| Two-Way Valve Action | REVERSE ACTING |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 9.062 INCHES MINIMUM AND 9.312 INCHES MAXIMUM IN |
| First End Style Designator | PLAIN |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| End Connection Quantity | 2 |
| First End Connection Type | UNTHREADED INTERNAL PIPE |
| Temp Adjustability | ADJUSTABLE |
| First End Nominal Pipe Size Accommodated | 1.500 INCHES IN |
| Material | COPPER ALLOY 922 BODY |
| Material | COPPER ALLOY 511 OR NICKEL ALLOY FLOW CONTROL DEVICE |
| 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 |
|---|---|
| 40054-04/50002-26 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 3257952 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 4820-01-255-9600 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 4820-01-255-9600 has 1 manufacturer part number on file: 40054-04/50002-26 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40054-04/50002-26: Flow Control Device: DIAPHRAGM; Two-Way Valve Action: REVERSE ACTING; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 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.