The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-558-7834, 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 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-558-7834 |
| Primary Part Number | 40756-7 |
| 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 | PISTON, SPRING LOADED |
| Body Style | TEE |
| Face to Face Distance | 7.438 INCHES MINIMUM AND 7.562 INCHES MAXIMUM IN |
| Bulb Length | 12.500 INCHES NOMINAL IN |
| Bulb Diameter | 1.000 INCHES NOMINAL IN |
| First Connection Face to Centerline Distance | 4.688 INCHES MINIMUM AND 4.812 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-B-626, ALLOY 360, 1/2H FED SPEC SINGLE MATERIAL RESPONSE AND ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-N-281, CLASS B FED SPEC SINGLE MATERIAL RESPONSE STEM |
| End Connection Quantity | 3 |
| Valve Size | 2.000 INCHES IN |
| Temp Adjustability | ADJUSTABLE |
| Material | NICKEL ALLOY R-405 STEM |
| Material | COPPER ALLOY 922 SEAT |
| Material | PLASTIC TETRAFLUOROETHYLENE PACKING |
| Material | COPPER ALLOY 360 AND COPPER ALLOY 922 BODY |
| Maximum Inlet Pressure Rating | ERR-060 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-558-7834 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 4820-01-558-7834 has 2 manufacturer part numbers on file: 40756-7 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40756-701 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40756-7: Flow Control Device: PISTON, SPRING LOADED; Body Style: TEE; Face to Face Distance: 7.438 INCHES MINIMUM AND 7.562 INCHES MAXIMUM IN; Bulb Length: 12.500 INCHES NOMINAL IN. 17 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.