The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-261-5731, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-261-5731 |
| Primary Part Number | 3255592 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Body Style | STRAIGHT THRU |
| Bulb Length | 11.875 INCHES MINIMUM AND 12.125 INCHES MAXIMUM IN |
| Bulb Diameter | 1.120 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN |
| Temp Rating | 53.0 FAHRENHEIT NOMINAL DEGF |
| End Connection Quantity | 2 |
| Capillary Tube Length | 176.000 INCHES MINIMUM AND 184.000 INCHES MAXIMUM IN |
| Temp Adjustability | ADJUSTABLE |
| Thermostatic Element | DUCT TYPE |
| Furnished Items | TAILPIECE |
| 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 |
|---|---|
| MK82-4 | Richards Industries Valve Group Jordan Valve Div (USA) |
| 3255592 PRIMARY | Naval Sea Systems Command (USA) |
| 40599-801 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 40101/50002-33 | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| 3255592 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 4820-01-261-5731 is a Valve,regulating,temperature, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-261-5731 has 3 manufacturer part numbers on file: MK82-4 (Richards Industries Valve Group Jordan Valve Div), 3255592 (Naval Sea Systems Command), 40599-801 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 3255592: Body Style: STRAIGHT THRU; Bulb Length: 11.875 INCHES MINIMUM AND 12.125 INCHES MAXIMUM IN; Bulb Diameter: 1.120 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN; Temp Rating: 53.0 FAHRENHEIT NOMINAL DEGF. 9 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.