The Valve,safety Relief, cataloged under National Stock Number 4820-01-331-0536, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Link-Belt Cranes, L.p., Lllp. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-331-0536 |
| Primary Part Number | 3A11621 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Link-Belt Cranes, L.p., Lllp |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 GASKET |
| Renewable Seat Ring Type | PRESSED-IN |
| Bonnet Type | EXPOSED SPRING |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | PRESSURE SEAL, RING TYPE |
| 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 |
|---|---|
| 12759001 | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| 3A11621 PRIMARY | Link-Belt Cranes, L.p., Lllp (USA) |
| Reference | Meaning |
|---|---|
| K-2029-A | 5/9 Secondary reference Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division |
NSN 4820-01-331-0536 is a Valve,safety Relief, manufactured by Link-Belt Cranes, L.p., Lllp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-331-0536 has 2 manufacturer part numbers on file: 12759001 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 3A11621 (Link-Belt Cranes, L.p., Lllp).
Key specifications for 3A11621: Furnished Items and Quantity: 1 GASKET; Renewable Seat Ring Type: PRESSED-IN; Bonnet Type: EXPOSED SPRING; Disk Loading Method: SPRING. 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.