The Valve,expansion, cataloged under National Stock Number 4820-00-545-0936, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corp Div Sporlan Division. Government technical data includes 26 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-545-0936 |
| Primary Part Number | EFV-1/2C |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corp Div Sporlan Division |
| Status | ACTIVE |
| Flow Control Device | NEEDLE |
| Valve Equalizer Location | INTERNAL |
| Temp Rating | -40.0 FAHRENHEIT AND 50.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | NOT IDENTICAL |
| Surface Treatment Document and Classification | MIL-P-1265 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Body Style | STRAIGHT THRU |
| First End Style Designator | PLAIN |
| Bulb Length | 3.000 INCHES NOMINAL IN |
| Bulb Diameter | 0.500 INCHES NOMINAL IN |
| Mounting Method | CLAMP BULB |
| End Connection Quantity | 2 |
| Capillary Tube Length | 60.000 INCHES NOMINAL IN |
| Second End Style Designator | PLAIN |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| Surface Treatment | PAINT OUTSIDE |
| Valve Evaporator Temp Range Designation | HIGH |
| Bulb Media Type | REFRIGERANT 22 |
| First End Outside Diameter Tube Accommodated | 0.625 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEAT |
| Valve Expansion Control Type | THERMOSTATIC |
| Media for Which Designed | REFRIGERANT 22 |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Connection Type | UNTHREADED INTERNAL 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 |
|---|---|
| EFV-1/2C PRIMARY | Parker-Hannifin Corp Div Sporlan Division (USA) |
| Reference | Meaning |
|---|---|
| 328-048 | 5/9 Secondary reference Eaton Corp Controls Div |
| 328VA70328-048 | 5/9 Secondary reference U.S. Government activity |
| FV-1/2C | 5/9 Secondary reference Parker-Hannifin Corp Div Sporlan Division |
NSN 4820-00-545-0936 is a Valve,expansion, manufactured by Parker-Hannifin Corp Div Sporlan Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-545-0936 has 1 manufacturer part number on file: EFV-1/2C (Parker-Hannifin Corp Div Sporlan Division).
1 possible match (shared part number, not a government interchangeability claim): 5355-01-183-9904. Verify interchangeability with system specifications before substitution.
Key specifications for EFV-1/2C: Flow Control Device: NEEDLE; Valve Equalizer Location: INTERNAL; Temp Rating: -40.0 FAHRENHEIT AND 50.0 FAHRENHEIT DEGF; Second End Relationship with First End: NOT IDENTICAL. 26 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.