The Valve,expansion, cataloged under National Stock Number 4820-00-035-6257, 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 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-035-6257 |
| Primary Part Number | TCLEGT2015 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Flow Control Device | STEM AND INTEGRAL DISK |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | SOCKET |
| Bulb Length | 3.060 INCHES NOMINAL IN |
| Bulb Diameter | 0.620 INCHES NOMINAL IN |
| Valve Equalizer Connection Diameter | 0.250 INCHES NOMINAL IN |
| Mounting Method | WELL BULB |
| Refrigeration Capacity in Btu Per Hour | 42.0 |
| Material Document and Classification | ASTM B283-56,MFR 81346 ASSN STD 1ST MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B283-56,MFR 81346 ASSN STD 1ST MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B283-56,MFR 81346 ASSN STD 1ST MATERIAL RESPONSE SEAT |
| End Connection Quantity | 2 |
| Capillary Tube Length | 39.000 INCHES MINIMUM AND 41.000 INCHES MAXIMUM IN |
| Second End Style Designator | PLAIN |
| Valve Evaporator Temp Range Designation | HIGH |
| First End Outside Diameter Tube Accommodated | 0.875 INCHES MINIMUM AND 0.878 INCHES MAXIMUM IN |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEAT |
| Media for Which Designed | REFRIGERANT 12 |
| Valve Equalizer Connection Type | FLARED TUBE |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Outside Diameter Tube Accommodated | 0.502 INCHES MINIMUM AND 0.506 INCHES MAXIMUM 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 |
|---|---|
| TCLEGT2015 PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| Reference | Meaning |
|---|---|
| C5-19-4914 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4820-00-035-6257 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-035-6257 has 1 manufacturer part number on file: TCLEGT2015 (Emerson Electric Co Alco Controls Div).
Key specifications for TCLEGT2015: Flow Control Device: STEM AND INTEGRAL DISK; Second End Relationship with First End: NOT IDENTICAL; Body Style: STRAIGHT THRU; First End Style Designator: SOCKET. 24 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.