The Valve,expansion, cataloged under National Stock Number 4820-00-135-6489, 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 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-135-6489 |
| Primary Part Number | TCLEB2HW |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS |
| Third End Relationship with Preceding Ends | NOT IDENTICAL WITH FIRST OR SECOND END |
| First End Style Designator | SOCKET |
| Bulb Length | 5.500 INCHES NOMINAL IN |
| Bulb Diameter | 2.125 INCHES NOMINAL IN |
| Mounting Method | CLAMP BULB |
| End Connection Quantity | 3 |
| Third End Outside Diameter Tube Accommodated | 0.250 INCHES NOMINAL IN |
| Capillary Tube Length | 60.000 INCHES NOMINAL IN |
| Third End Thread Direction | RIGHT-HAND |
| Second End Style Designator | SOCKET |
| Third End Thread Class | 2A A |
| Valve Evaporator Temp Range Designation | LOW |
| First End Outside Diameter Tube Accommodated | 0.500 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING BODY |
| Material | COPPER ALLOY STEM |
| Media for Which Designed | REFRIGERANT 12 |
| Third End Seat Angle in Deg | 45.0 |
| Third End Style Designator | FLARED |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Outside Diameter Tube Accommodated | 0.625 INCHES NOMINAL IN |
| 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 |
|---|---|
| TCLEB2HW PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| Reference | Meaning |
|---|---|
| TCLB200HW100 | 5/9 Secondary reference Emerson Electric Co Alco Controls Div |
NSN 4820-00-135-6489 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-135-6489 has 1 manufacturer part number on file: TCLEB2HW (Emerson Electric Co Alco Controls Div).
Key specifications for TCLEB2HW: Flow Control Device: DIAPHRAGM; Second End Relationship with First End: NOT IDENTICAL; Body Style: ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS; Third End Relationship with Preceding Ends: NOT IDENTICAL WITH FIRST OR SECOND END. 25 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.