The Valve,expansion, cataloged under National Stock Number 4820-01-377-6701, 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 21 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 | 4820-01-377-6701 |
| Primary Part Number | TCLN1FW1/2X5/8ODF 20FT EXTEQUL |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Flow Control Device | PLUG |
| Valve Equalizer Location | EXTERNAL |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | PLAIN |
| Valve Equalizer Connection Diameter | 0.500 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Refrigeration Capacity in Btu Per Hour | 6.0 |
| End Connection Quantity | 2 |
| Second End Style Designator | PLAIN |
| First End Connection Type | UNTHREADED EXTERNAL TUBE |
| Valve Evaporator Temp Range Designation | HIGH |
| First End Outside Diameter Tube Accommodated | 0.625 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEAT |
| Valve Expansion Control Type | THERMOSTATIC |
| Media for Which Designed | REFRIGERANT 12 |
| Valve Equalizer Connection Type | FLARED TUBE |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Connection Type | UNTHREADED EXTERNAL TUBE |
| Second End Outside Diameter Tube Accommodated | 0.500 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 |
|---|---|
| TCLN1FW1/2X5/8ODF 20FT EXTEQUL PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| 025-20879 | Johnson Controls Navy Systems, Llc (USA) |
| F23045ASSY TCLN1FW1/2X5/8,20FT | Emerson Electric Co Alco Controls Div (USA) |
NSN 4820-01-377-6701 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-377-6701 has 3 manufacturer part numbers on file: TCLN1FW1/2X5/8ODF 20FT EXTEQUL (Emerson Electric Co Alco Controls Div), 025-20879 (Johnson Controls Navy Systems, Llc), F23045ASSY TCLN1FW1/2X5/8,20FT (Emerson Electric Co Alco Controls Div).
Key specifications for TCLN1FW1/2X5/8ODF 20FT EXTEQUL: Flow Control Device: PLUG; Valve Equalizer Location: EXTERNAL; Second End Relationship with First End: NOT IDENTICAL; Body Style: STRAIGHT THRU. 21 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.