The Regulator,thermostatic Temperatu, cataloged under National Stock Number 4820-00-243-9931, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-243-9931 |
| Primary Part Number | XB1019HW100-2B |
| Item Name | Regulator,thermostatic Temperatu |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Bulb Length | 3.225 INCHES NOMINAL IN |
| Bulb Diameter | 0.625 INCHES NOMINAL IN |
| Mounting Method | FLANGE |
| Capillary Tube Length | 120.000 INCHES NOMINAL IN |
| Thermostat Type | BULB |
| Usage Design | CONTROLS TEMP.IN T SERIES 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 |
|---|---|
| XB1019HW100-2B PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| RAR1710 | Naval Group Site De Lorient (FRA) |
| SR1531/1 | Devonport Royal Dockyard Limited, Devonport Royal Dockyard (GBR) |
NSN 4820-00-243-9931 is a Regulator,thermostatic Temperatu, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-243-9931 has 3 manufacturer part numbers on file: XB1019HW100-2B (Emerson Electric Co Alco Controls Div), RAR1710 (Naval Group Site De Lorient), SR1531/1 (Devonport Royal Dockyard Limited, Devonport Royal Dockyard).
Key specifications for XB1019HW100-2B: Bulb Length: 3.225 INCHES NOMINAL IN; Bulb Diameter: 0.625 INCHES NOMINAL IN; Mounting Method: FLANGE; Capillary Tube Length: 120.000 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.