The Valve,safety Relief, cataloged under National Stock Number 4820-01-435-4639, 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 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-435-4639 |
| Primary Part Number | RPGC-LAN-CKB/S |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sun Hydraulics Corporation |
| Status | ACTIVE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | RUBBER PACKING |
| Opening Pressure Setting | 1000.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 50.0 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 |
|---|---|
| RPGC-LAN-CKB/S PRIMARY | Sun Hydraulics Corporation (USA) |
| Reference | Meaning |
|---|---|
| 17158 IT 17 | 5/9 Secondary reference Tts Marine Ab Formerly Tts Ships Equipment Ab Div Dry Cargo Handling |
| RPGC-LAN-CKB/S | 5/9 Secondary reference Hamworthy Kse Ab |
| 17158 IT 17 | 5/9 Secondary reference Hamworthy Kse Ab |
| RPGC-LAN-CKB/S | 5/9 Secondary reference Tts Marine Ab Formerly Tts Ships Equipment Ab Div Dry Cargo Handling |
NSN 4820-01-435-4639 is a Valve,safety Relief, manufactured by Sun Hydraulics Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-435-4639 has 1 manufacturer part number on file: RPGC-LAN-CKB/S (Sun Hydraulics Corporation).
Key specifications for RPGC-LAN-CKB/S: Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Special Features: CARTRIDGE TYPE VALVE; ADJUSTING SCREW FOR PRESSURE SETTING; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: RUBBER PACKING. 5 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.