The Valve,expansion, cataloged under National Stock Number 4820-01-499-6646, 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 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-499-6646 |
| Primary Part Number | 063240 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| Bulb Length | 3.562 INCHES NOMINAL IN |
| Bulb Diameter | 0.625 INCHES NOMINAL IN |
| Valve Equalizer Connection Diameter | 0.250 INCHES NOMINAL IN |
| Capillary Tube Length | 120.000 INCHES NOMINAL IN |
| Valve Expansion Control Type | THERMOSTATIC |
| Media for Which Designed | REFRIGERANT |
| 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 |
|---|---|
| 063240 PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| 025-33594 | Johnson Controls Navy Systems, Llc (USA) |
| 376-97567-000 ITEM 3 | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 376-97567-000 | D/9 Drawing number reference only Johnson Controls Navy Systems, Llc |
| TCLN3/4MW-55 3/8X1/2 ODF 10 FT | 3/9 Design control — primary reference Emerson Electric Co Alco Controls Div |
NSN 4820-01-499-6646 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-499-6646 has 3 manufacturer part numbers on file: 063240 (Emerson Electric Co Alco Controls Div), 025-33594 (Johnson Controls Navy Systems, Llc), 376-97567-000 ITEM 3 (Johnson Controls Navy Systems, Llc).
Key specifications for 063240: Body Style: ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS; Bulb Length: 3.562 INCHES NOMINAL IN; Bulb Diameter: 0.625 INCHES NOMINAL IN; Valve Equalizer Connection Diameter: 0.250 INCHES NOMINAL IN. 7 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.