The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-034-4311, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-034-4311 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Two-Way Valve Action | REVERSE ACTING |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | PLAIN |
| Bulb Length | 14.000 INCHES NOMINAL IN |
| Bulb Diameter | 0.688 INCHES NOMINAL IN |
| Temp Rating | -75.0 FAHRENHEIT MINIMUM AND 135.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Capillary Tube Length | 72.000 INCHES NOMINAL IN |
| First End Connection Type | THREADED INTERNAL PIPE |
| Temp Adjustability | ADJUSTABLE |
| Thermostatic Element | LIQUID IMMERSION TYPE |
| Material | IRON CAST BODY |
| Material | STEEL CORROSION RESISTING BULB |
| Material | COPPER ALLOY SEAT |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE |
| Thread Size and Series/type Designator | 1 1/4-11 1/2 NPT FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| V47AE-1 | C/1 Advisory reference — outside the item-of-supply concept Johnson Controls Inc Control Products Div |
| V47AE-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-034-4311 is a Valve,regulating,temperature, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-034-4311: Flow Control Device: DIAPHRAGM; Two-Way Valve Action: REVERSE ACTING; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL. 19 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.