PartsTable TECHNICAL DATA SHEET
NSN 4820-00-244-2450Government record, cited

Valve, Expansion4820-00-244-2450

NSN 4820-00-244-2450 · NIIN 002442450 · Part number TCL3FWA2
Emerson Electric Co Alco Controls Div · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 70255
Government record, cited
NSN 4820-00-244-2450 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-244-2450. Manufacturer of record part number: TCL3FWA2.
Also searched as  4820-00-244-2450 · 4820002442450 · NIIN 002442450 · 00-244-2450 · FSC 4820 Valves, Nonpowered · CAGE 70255 · TCL3FWA2 · TCLN3FC · TCLN300FA2F · TCLN1FA10F · F23046
Nearby stock numbers  ·
Features
  • Valve,expansion — FSC 4820
  • Flow Control Device: DISK, TOP GUIDED
  • Temp Rating: 250.0 FAHRENHEIT DEGF
  • Second End Relationship with First End: NOT IDENTICAL
  • Body Style: ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS
  • Mounting Method: CLAMP BULB
  • Refrigeration Capacity in Btu Per Hour: 42.000
  • End Connection Quantity: 2
Identification
  • NSN: 4820-00-244-2450
  • NIIN: 002442450
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: TCL3FWA2
  • Manufacturer: Emerson Electric Co Alco Controls Div
General Description

The Valve,expansion, cataloged under National Stock Number 4820-00-244-2450, 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 19 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-244-2450
Primary Part NumberTCL3FWA2
Item NameValve,expansion
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerEmerson Electric Co Alco Controls Div
StatusACTIVE
Flow Control DeviceDISK, TOP GUIDED
Temp Rating250.0 FAHRENHEIT DEGF
Second End Relationship with First EndNOT IDENTICAL
Body StyleANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS
Mounting MethodCLAMP BULB
Refrigeration Capacity in Btu Per Hour42.000
End Connection Quantity2
Capillary Tube Length180.000 INCHES NOMINAL IN
First End Connection TypeUNTHREADED INTERNAL TUBE
Valve Evaporator Temp Range DesignationHIGH
Bulb Media TypeREFRIGERANT 12
First End Outside Diameter Tube Accommodated0.500 INCHES NOMINAL IN
MaterialCOPPER ALLOY BODY
MaterialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MaterialCOPPER ALLOY SEAT
Valve Expansion Control TypeTHERMOSTATIC
Media for Which DesignedREFRIGERANT 12
Second End Connection TypeUNTHREADED INTERNAL TUBE
Second End Outside Diameter Tube Accommodated0.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-00-244-2454TCLN6112FW POSSIBLE MATCH
VALVE,EXPANSION
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-00-244-2504TCLN0FA10D POSSIBLE MATCH
VALVE,EXPANSION
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-00-256-6662PCN035371 POSSIBLE MATCH
VALVE,EXPANSION
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-00-256-6677TCLN1FWODFEE3/8X1/20DFANG POSSIBLE MATCH
VALVE,EXPANSION
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-00-256-6680TCLN1FW POSSIBLE MATCH
VALVE,EXPANSION
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-00-256-6684TCLN2FW POSSIBLE MATCH
VALVE,EXPANSION
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-01-195-6362X23048-HW-2C POSSIBLE MATCH
POWER ASSEMBLY
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-01-450-7646XBN-1019 MW-6E POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-01-450-7648XBN-1019 MW 35-4E POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
Possible match (shared part number)Emerson Electric Co Alco Controls Div
4820-01-450-8591TCLN1/2-MW35-3/8X5/8-6C POSSIBLE MATCH
VALVE,EXPANSION
Possible match (shared part number)Emerson Electric Co Alco Controls Div
Cross-Reference Index
Part NumberManufacturer
TCL3FWA2 PRIMARY Emerson Electric Co Alco Controls Div (USA)
Reference documents
ReferenceMeaning
TCLN3FC 5/9 Secondary reference
Emerson Electric Co Alco Controls Div
TCLN300FA2F 5/9 Secondary reference
Emerson Electric Co Alco Controls Div
TCLN1FA10F 5/9 Secondary reference
Emerson Electric Co Alco Controls Div
F23046 D/9 Drawing number reference only
Emerson Electric Co Alco Controls Div
F1179REVD 5/9 Secondary reference
Emerson Electric Co Alco Controls Div
TCLN300FLA2F C/1 Advisory reference — outside the item-of-supply concept
Emerson Electric Co Alco Controls Div
Related Parts
4820-00-244-2454POSSIBLE MATCH
VALVE,EXPANSION
TCLN6112FW
4820-00-244-2504POSSIBLE MATCH
VALVE,EXPANSION
TCLN0FA10D
4820-00-256-6662POSSIBLE MATCH
VALVE,EXPANSION
PCN035371
4820-00-256-6677POSSIBLE MATCH
VALVE,EXPANSION
TCLN1FWODFEE3/8X1/20DFANG
4820-00-256-6680POSSIBLE MATCH
VALVE,EXPANSION
TCLN1FW
4820-00-256-6684POSSIBLE MATCH
VALVE,EXPANSION
TCLN2FW
4820-01-195-6362POSSIBLE MATCH
POWER ASSEMBLY
X23048-HW-2C
4820-01-450-7646POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
XBN-1019 MW-6E
4820-01-450-7648POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
XBN-1019 MW 35-4E
4820-01-450-8591POSSIBLE MATCH
VALVE,EXPANSION
TCLN1/2-MW35-3/8X5/8-6C

Frequently Asked Questions

What is NSN 4820-00-244-2450?

NSN 4820-00-244-2450 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-00-244-2450?

NSN 4820-00-244-2450 has 1 manufacturer part number on file: TCL3FWA2 (Emerson Electric Co Alco Controls Div).

What NSN replaces 4820-00-244-2450?

10 possible matches (shared part number, not a government interchangeability claim): 4820-00-244-2454, 4820-00-244-2504, 4820-00-256-6662. Verify interchangeability with system specifications before substitution.

What are the specifications of TCL3FWA2?

Key specifications for TCL3FWA2: Flow Control Device: DISK, TOP GUIDED; Temp Rating: 250.0 FAHRENHEIT DEGF; Second End Relationship with First End: NOT IDENTICAL; Body Style: ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS. 19 specifications are documented in the U.S. Government catalog.

Is NSN 4820-00-244-2450 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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