The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-339-9202, 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 26 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-339-9202 |
| Primary Part Number | 40595-102 |
| 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 | POPPET, DUAL DISK |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 5.500 INCHES NOMINAL IN |
| First End Flange Thickness | 0.500 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 5.000 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| Bulb Length | 12.000 INCHES NOMINAL IN |
| Bulb Diameter | 1.000 INCHES NOMINAL IN |
| Temp Rating | 70.00 FAHRENHEIT MINIMUM AND 110.0 FAHRENHEIT MAXIMUM DEGF |
| First End Bolt Hole Diameter | 0.500 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 3.875 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE STEM |
| End Connection Quantity | 2 |
| Capillary Tube Length | 120.000 INCHES NOMINAL IN |
| First End Connection Type | PLAIN FACE FLANGE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Flange Shape Style | ROUND |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | NICKEL ALLOY SEAT |
| Material | COPPER ALLOY 922 BODY |
| Material | COPPER BULB |
| Material | COPPER ALLOY 922 STEM |
| 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 |
|---|---|
| 40595-102 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
NSN 4820-01-339-9202 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 4820-01-339-9202 has 1 manufacturer part number on file: 40595-102 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40595-102: Flow Control Device: POPPET, DUAL DISK; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU; Face to Face Distance: 5.500 INCHES NOMINAL IN. 26 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.