The Valve,expansion, cataloged under National Stock Number 4820-01-455-5020, 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 23 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 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 | 4820-01-455-5020 |
| Primary Part Number | Y797-ABIFE-1 1/2CP60 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corp Div Sporlan Division |
| Status | ACTIVE |
| Flow Control Device | ANY ACCEPTABLE |
| First End Thread Series Designator | UNF |
| Valve Equalizer Location | EXTERNAL |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.625 INCHES IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Thread Class | 2A A |
| Body Style | ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS |
| First End Thread Class | 2A A |
| First End Style Designator | GASKET SEAL |
| Bulb Length | 3.000 INCHES NOMINAL IN |
| Bulb Diameter | 0.500 INCHES NOMINAL IN |
| First Connection Face to Centerline Distance | 2.300 INCHES NOMINAL IN |
| Second End Thread Series Designator | UNF |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| Second Connection Face to Centerline Distance | 1.560 INCHES NOMINAL IN |
| Capillary Tube Length | 15.000 INCHES NOMINAL IN |
| Second End Style Designator | GASKET SEAL |
| First End Connection Type | THREADED EXTERNAL BOSS |
| Valve Equalizer Connection Type | FLARED TUBE |
| Second End Connection Type | THREADED EXTERNAL BOSS |
| First End Nominal Thread Size | 0.750 INCHES 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 |
|---|---|
| Y797-ABIFE-1 1/2CP60 PRIMARY | Parker-Hannifin Corp Div Sporlan Division (USA) |
NSN 4820-01-455-5020 is a Valve,expansion, manufactured by Parker-Hannifin Corp Div Sporlan Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-455-5020 has 1 manufacturer part number on file: Y797-ABIFE-1 1/2CP60 (Parker-Hannifin Corp Div Sporlan Division).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-475-3663. Verify interchangeability with system specifications before substitution.
Key specifications for Y797-ABIFE-1 1/2CP60: Flow Control Device: ANY ACCEPTABLE; First End Thread Series Designator: UNF; Valve Equalizer Location: EXTERNAL; First End Thread Direction: RIGHT-HAND. 23 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.