The Regulator,thermostatic Temperatu, cataloged under National Stock Number 4820-01-655-3495, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-655-3495 |
| Primary Part Number | XB1019 HW90 1B |
| Item Name | Regulator,thermostatic Temperatu |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Bulb Length | 1.5 MILLIMETERS NOMINAL MM |
| Bulb Diameter | 3.8 INCHES NOMINAL IN |
| Capillary Tube Length | 5.0 MILLIMETERS NOMINAL MM |
| Valve Size for Which Designed | 1.22 INCHES IN |
| Thermostat Type | ANY ACCEPTABLE |
| Usage Design | EXCHANGEABLE POWER ASSEMBLIES AND ORIFICES |
| 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 |
|---|---|
| XB1019 HW90 1B PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
NSN 4820-01-655-3495 is a Regulator,thermostatic Temperatu, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-655-3495 has 1 manufacturer part number on file: XB1019 HW90 1B (Emerson Electric Co Alco Controls Div).
Key specifications for XB1019 HW90 1B: Bulb Length: 1.5 MILLIMETERS NOMINAL MM; Bulb Diameter: 3.8 INCHES NOMINAL IN; Capillary Tube Length: 5.0 MILLIMETERS NOMINAL MM; Valve Size for Which Designed: 1.22 INCHES 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.