The Valve,expansion, cataloged under National Stock Number 4820-01-012-3959, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-012-3959 |
| Primary Part Number | VVE-52-CP100 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corp Div Sporlan Division |
| Status | ACTIVE |
| Flow Control Device | PISTON, SPRING LOADED |
| Valve Equalizer Location | EXTERNAL |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | SOCKET |
| Bulb Length | 4.000 INCHES NOMINAL IN |
| Bulb Diameter | 0.750 INCHES NOMINAL IN |
| Valve Equalizer Connection Diameter | 0.250 INCHES NOMINAL IN |
| Mounting Method | CLAMP BULB |
| Refrigeration Capacity in Btu Per Hour | 624.0 |
| End Connection Quantity | 2 |
| Capillary Tube Length | 60.000 INCHES NOMINAL IN |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| Valve Evaporator Temp Range Designation | LOW |
| Bulb Media Type | REFRIGERANT 22 |
| First End Outside Diameter Tube Accommodated | 1.000 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY AND RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING STEM |
| Material | COPPER ALLOY SEAT |
| Valve Expansion Control Type | THERMOSTATIC |
| Media for Which Designed | REFRIGERANT 22 |
| Valve Equalizer Connection Type | FLARED TUBE |
| Valve Pressure Limiting Device | NOT INCLUDED |
| 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 |
|---|---|
| VVE-52-CP100 PRIMARY | Parker-Hannifin Corp Div Sporlan Division (USA) |
| Reference | Meaning |
|---|---|
| VVE-52 | 5/9 Secondary reference Parker-Hannifin Corp Div Sporlan Division |
NSN 4820-01-012-3959 is a Valve,expansion, manufactured by Parker-Hannifin Corp Div Sporlan Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-012-3959 has 1 manufacturer part number on file: VVE-52-CP100 (Parker-Hannifin Corp Div Sporlan Division).
Key specifications for VVE-52-CP100: Flow Control Device: PISTON, SPRING LOADED; Valve Equalizer Location: EXTERNAL; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 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.