The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-439-5053, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Century Instrument Co. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-439-5053 |
| Primary Part Number | 301-D SER NR30-11345/30-11346 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Century Instrument Co |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Two-Way Valve Action | DIRECT ACTING |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | PLAIN |
| Temp Rating | 440.0 FAHRENHEIT NOMINAL DEGF |
| End Connection Quantity | 2 |
| First End Connection Type | THREADED INTERNAL PIPE |
| Temp Adjustability | NOT ADJUSTABLE |
| Material | COPPER ALLOY BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| Thread Size and Series/type Designator | 1/2-14 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 |
| Part Number | Manufacturer |
|---|---|
| 301-D SER NR30-11345/30-11346 PRIMARY | Century Instrument Co (USA) |
| Reference | Meaning |
|---|---|
| 301-D SER #30-1 | C/1 Advisory reference — outside the item-of-supply concept Century Instrument Co |
NSN 4820-01-439-5053 is a Valve,regulating,temperature, manufactured by Century Instrument Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-439-5053 has 1 manufacturer part number on file: 301-D SER NR30-11345/30-11346 (Century Instrument Co).
Key specifications for 301-D SER NR30-11345/30-11346: Flow Control Device: DISK; Two-Way Valve Action: DIRECT ACTING; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL. 15 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.