The Valve,safety Relief, cataloged under National Stock Number 4820-01-573-2400, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sun Hydraulics Corporation. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-573-2400 |
| Primary Part Number | RPIC-LEN |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sun Hydraulics Corporation |
| Status | ACTIVE |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +25.0 TO 400.0 POUNDS PER SQUARE INCH LBS |
| Opening Pressure Setting | 200.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 100.0 GALLONS PER MINUTE |
| 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 |
|---|---|
| 133755 REV H ITEM 17 | Kongsberg Maritime Sweden Ab (SWE) |
| RPIC-LEN | Sun Hydraulics Ltd (GBR) |
| RPIC-LEN PRIMARY | Sun Hydraulics Corporation (USA) |
| 40085028 | Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt) (GBR) |
| U80039238 | Mactaggart Scott & Co Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 133755 REV H ITEM 17 | 5/9 Secondary reference Rolls-Royce Ab |
NSN 4820-01-573-2400 is a Valve,safety Relief, manufactured by Sun Hydraulics Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-573-2400 has 5 manufacturer part numbers on file: 133755 REV H ITEM 17 (Kongsberg Maritime Sweden Ab), RPIC-LEN (Sun Hydraulics Ltd), RPIC-LEN (Sun Hydraulics Corporation), 40085028 (Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt)), U80039238 (Mactaggart Scott & Co Ltd).
Key specifications for RPIC-LEN: Style Designator: SCREW-IN CARTRIDGE; Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Adjustable Pressure Range: +25.0 TO 400.0 POUNDS PER SQUARE INCH LBS; Part Name Assigned by Controlling Agency: BALANCED POSITION, PILOT OPERATED, 2 PORT, CARTRIDGE RELIEF VALVE. 6 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.