The Regulator,thermostatic Temperatu, cataloged under National Stock Number 4820-01-450-7646, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Electric Co Alco Controls Div. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-450-7646 |
| Primary Part Number | XBN-1019 MW-6E |
| Item Name | Regulator,thermostatic Temperatu |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Bulb Length | 4.812 INCHES NOMINAL IN |
| Bulb Diameter | 0.625 INCHES NOMINAL IN |
| Mounting Method | FLANGE |
| Capillary Tube Length | 360.000 INCHES NOMINAL IN |
| Thermostat Type | BULB |
| Usage Design | REGULATES TEMPERATURE IN THERMAL EXPANSION VALVES |
| 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 |
|---|---|
| XBN-1019 MW-6E PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| X23048-MW35-6C | Williams and Co Inc (USA) |
| Reference | Meaning |
|---|---|
| X23048-MW35-6C | 5/9 Secondary reference Emerson Electric Co Alco Controls Div |
| F23046 | D/9 Drawing number reference only Emerson Electric Co Alco Controls Div |
| X23048-MW35-6C | 5/9 Secondary reference Progress Supply, Inc. |
NSN 4820-01-450-7646 is a Regulator,thermostatic Temperatu, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-450-7646 has 2 manufacturer part numbers on file: XBN-1019 MW-6E (Emerson Electric Co Alco Controls Div), X23048-MW35-6C (Williams and Co Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-450-7648, 4820-01-450-8591. Verify interchangeability with system specifications before substitution.
Key specifications for XBN-1019 MW-6E: Bulb Length: 4.812 INCHES NOMINAL IN; Bulb Diameter: 0.625 INCHES NOMINAL IN; Mounting Method: FLANGE; Capillary Tube Length: 360.000 INCHES NOMINAL IN. 6 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.