The Valve,expansion, cataloged under National Stock Number 4820-01-190-2782, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-190-2782 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK, PLUG TYPE |
| Valve Equalizer Location | EXTERNAL |
| Temp Rating | 100.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| First End Style Designator | PLAIN |
| Valve Equalizer Connection Diameter | 0.250 INCHES NOMINAL IN |
| Refrigeration Capacity in Btu Per Hour | 6.0 |
| End Connection Quantity | 2 |
| Second End Style Designator | SOCKET |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| Valve Evaporator Temp Range Designation | HIGH |
| First End Outside Diameter Tube Accommodated | 0.500 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Valve Expansion Control Type | THERMOSTATIC |
| Valve Equalizer Connection Type | FLARED TUBE |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Connection Type | UNTHREADED INTERNAL TUBE |
| Second End Outside Diameter Tube Accommodated | 0.500 INCHES NOMINAL IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY EXTRA LONG REFERENCE NUMBER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| TCLN1/2FW3-8X1/ | C/1 Advisory reference — outside the item-of-supply concept Emerson Electric Co Alco Controls Div |
| TCLN 1/2 FW EE20FT 3/8 X 1/2 OD- | 3/1 Design control — primary reference Emerson Electric Co Alco Controls Div |
| F23045 | D/9 Drawing number reference only Emerson Electric Co Alco Controls Div |
| TCLN-1/2-FW-3/8X1/2-20-EXTNL | 5/9 Secondary reference Emerson Electric Co Alco Controls Div |
| TCLN-GT-6321-37-1 | 5/9 Secondary reference Emerson Electric Co Alco Controls Div |
NSN 4820-01-190-2782 is a Valve,expansion, classified under FSC 4820, Valves, Nonpowered. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-198-5626, 4820-01-200-4264, 4820-01-200-8590. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-190-2782: Flow Control Device: DISK, PLUG TYPE; Valve Equalizer Location: EXTERNAL; Temp Rating: 100.0 FAHRENHEIT DEGF; Second End Relationship with First End: NOT IDENTICAL. 20 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.