The Valve,hold,boom Hoist Cylinder, cataloged under National Stock Number 4820-01-438-7551, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-438-7551 |
| Primary Part Number | CBGA-LIV-ZTK-S |
| Item Name | Valve,hold,boom Hoist Cylinder |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sun Hydraulics Corporation |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL BOSSTHREADED INTERNAL BOSS |
| End Connection Quantity | 44 |
| Adjustable Pressure Range | +400.0 TO 1500.0 POUNDS PER SQUARE INCH+400.0 TO 1500.0 POUNDS PER SQUARE INCH LBS |
| Material | IRON BODY |
| Pilot Ratio | 3 TO 13 TO 1 |
| Opening Pressure Setting | 1000.0 POUNDS PER SQUARE INCH1000.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 7D3-05076 IT NO. 37 | Lake Shore Systems, Inc. (USA) |
| CBGA-LIV-ZTK-S PRIMARY | Sun Hydraulics Corporation (USA) |
| Reference | Meaning |
|---|---|
| 7D3-05076 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 4820-01-438-7551 is a Valve,hold,boom Hoist Cylinder, manufactured by Sun Hydraulics Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-438-7551 has 2 manufacturer part numbers on file: 7D3-05076 IT NO. 37 (Lake Shore Systems, Inc.), CBGA-LIV-ZTK-S (Sun Hydraulics Corporation).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-438-8093. Verify interchangeability with system specifications before substitution.
Key specifications for CBGA-LIV-ZTK-S: Connection Type: THREADED INTERNAL BOSSTHREADED INTERNAL BOSS; End Connection Quantity: 44; Adjustable Pressure Range: +400.0 TO 1500.0 POUNDS PER SQUARE INCH+400.0 TO 1500.0 POUNDS PER SQUARE INCH LBS; Part Name Assigned by Controlling Agency: COUNTERBALANCE VALVECOUNTERBALANCE VALVE. 7 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.