The Valve,safety Relief, cataloged under National Stock Number 4820-00-200-8124, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-200-8124 |
| Primary Part Number | VPRB5B3AA125 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| Status | ACTIVE |
| Flow Control Device | PISTON |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Connection Style | PLAIN,OPTIONAL END(PIPE) SECOND END |
| Connection Style | GASKET SEAL(BOSS) THIRD END |
| Connection Type | THREADED INTERNAL BOSS THIRD END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Style Designator | ANGLE |
| Bonnet Type | INSIDE SCREW |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND THIRD END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 1.062 INCHES THIRD END IN |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Mounting Facility | BRACKET(S) |
| Bonnet Attachment Method | THREADED |
| Thread Class | 2B THIRD END |
| First Connection Face to Centerline Distance | 1.500 INCHES IN |
| Thread Quantity Per Inch | 12 THIRD END |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | IRON CAST BODY |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT FIRST END |
| Thread Series Designator | UN THIRD END |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| VPRB5B3AA125 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| Reference | Meaning |
|---|---|
| B7866 | 5/9 Secondary reference Pettibone Llc |
| VPRB5B3AA125 | 5/9 Secondary reference Parker-Hannifin Corp Fluidpower Group Mobile Hydraulics Div |
| VPRP5B3AA125 | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corp Fluidpower Group Mobile Hydraulics Div |
| P66702 | 5/9 Secondary reference Athey Products Corp |
| 18B7866 | 5/9 Secondary reference Lift Parts Mfg Co Inc Div of Echlin Mfg Co the |
| 0N3VPR3P3F | 5/9 Secondary reference Lift Parts Mfg Co Inc Div of Echlin Mfg Co the |
| VPR10B1-1250PSI | 5/9 Secondary reference Parker-Hannifin Corp Fluidpower Group Mobile Hydraulics Div |
| 2008124 | 5/9 Secondary reference Intrupa Mfg Co |
NSN 4820-00-200-8124 is a Valve,safety Relief, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-200-8124 has 1 manufacturer part number on file: VPRB5B3AA125 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-118-7460, 4820-01-118-7461, 5985-01-367-9764. Verify interchangeability with system specifications before substitution.
Key specifications for VPRB5B3AA125: Flow Control Device: PISTON; Connection Style: PLAIN,OPTIONAL END(PIPE) FIRST END; Connection Style: PLAIN,OPTIONAL END(PIPE) SECOND END; Connection Style: GASKET SEAL(BOSS) THIRD END. 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.