The Valve,hold,boom Hoist Cylinder, cataloged under National Stock Number 4820-01-525-0409, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sterling Hydraulics Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-525-0409 |
| Primary Part Number | EL2NA-DWNZS-232A |
| Item Name | Valve,hold,boom Hoist Cylinder |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sterling Hydraulics Inc |
| Status | ACTIVE |
| Connection Type | THREADED CARTRIDGETHREADED CARTRIDGE |
| End Connection Quantity | 11 |
| Adjustable Pressure Range | +725.0 TO 5000.0 POUNDS PER SQUARE INCH+725.0 TO 5000.0 POUNDS PER SQUARE INCH LBS |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAL |
| Material | ALUMINUM ALLOY BODY |
| Pilot Ratio | 3:13:1 |
| Valve Discharge Flow Rate | 32.0 GALLONS PER MINUTE32.0 GALLONS PER MINUTE |
| Valve Operation Method | PILOTPILOT |
| 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 |
|---|---|
| 235241 | Allied Systems Company Dba Allied Systems Co (USA) |
| EL2NA-DWNZS-232A PRIMARY | Sterling Hydraulics Inc (USA) |
NSN 4820-01-525-0409 is a Valve,hold,boom Hoist Cylinder, manufactured by Sterling Hydraulics Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-525-0409 has 2 manufacturer part numbers on file: 235241 (Allied Systems Company Dba Allied Systems Co), EL2NA-DWNZS-232A (Sterling Hydraulics Inc).
Key specifications for EL2NA-DWNZS-232A: Connection Type: THREADED CARTRIDGETHREADED CARTRIDGE; End Connection Quantity: 11; Adjustable Pressure Range: +725.0 TO 5000.0 POUNDS PER SQUARE INCH+725.0 TO 5000.0 POUNDS PER SQUARE INCH LBS; Special Features: VALVE HAS PILOT OPEN FUNCTION ON MAIN POPPET, RELIEF FUNCTION AND FREE REVERSE FLOW FUNCTION; ADJUSTMENT SCREW, LINE BODY CAVITY 3C; THREADS ARE SAEVALVE HAS PILOT OPEN FUNCTION ON MAIN POPPET, RELIEF FUNCTION AND FREE REVERSE FLOW FUNCTION; ADJUSTMENT SCREW, LINE BODY CAVITY 3C; THREADS ARE SAE. 8 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.