The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-255-9601, 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 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-255-9601 |
| Primary Part Number | 40086-101 |
| 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 | 6 |
| Flow Control Device | DIAPHRAGM |
| Two-Way Valve Action | DIRECT ACTING |
| Second End Relationship with First End | IDENTICAL |
| Body Style | TEE |
| Face to Face Distance | 8.688 INCHES MINIMUM AND 8.812 INCHES MAXIMUM IN |
| Third End Relationship with Preceding Ends | IDENTICAL WITH FIRST END |
| First End Style Designator | PLAIN |
| Bulb Length | 1.875 INCHES NOMINAL IN |
| Bulb Diameter | 2.000 INCHES NOMINAL IN |
| Temp Rating | 89.0 FAHRENHEIT MINIMUM AND 95.0 FAHRENHEIT MAXIMUM DEGF |
| First Connection Face to Centerline Distance | 4.813 INCHES MINIMUM AND 4.937 INCHES MAXIMUM IN |
| First End Bolt Hole Diameter | 0.563 INCHES NOMINAL IN |
| End Connection Quantity | 3 |
| Capillary Tube Length | 168.000 INCHES NOMINAL IN |
| First End Connection Type | PLAIN FACE FLANGE |
| Temp Adjustability | ADJUSTABLE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Thermostatic Element | INTEGRAL W/VALVE |
| Material | COPPER ALLOY BODY |
| 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 |
|---|---|
| 40086-101 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 3257953 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 4820-01-255-9601 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 4820-01-255-9601 has 1 manufacturer part number on file: 40086-101 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40086-101: First End Bolt Hole Quantity: 6; Flow Control Device: DIAPHRAGM; Two-Way Valve Action: DIRECT ACTING; Second End Relationship with First End: IDENTICAL. 20 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.