The Valve,safety Relief, cataloged under National Stock Number 4820-01-500-7255, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Systems Company Dba Allied Systems Co. 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 | 4820-01-500-7255 |
| Primary Part Number | 235622 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Allied Systems Company Dba Allied Systems Co |
| Status | ACTIVE |
| 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 |
|---|---|
| 235622 PRIMARY | Allied Systems Company Dba Allied Systems Co (USA) |
| MANUAL 1987-1999 FIG7-25 ITEM 3 | Allied Systems Company Dba Allied Systems Co (USA) |
NSN 4820-01-500-7255 is a Valve,safety Relief, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-500-7255 has 2 manufacturer part numbers on file: 235622 (Allied Systems Company Dba Allied Systems Co), MANUAL 1987-1999 FIG7-25 ITEM 3 (Allied Systems Company Dba Allied Systems Co).
Key specifications for 235622: Special Features: WINCH SYSTEM CONTROLS HYDRAULIC POWER TO THE WINCH FOR EITHER NORMAL HOISTING AND LOWERING, OR CONSTANT TENSION FUNCTIONS; HYDRAULIC POWER IS APPLIED TO EITHER A LOAD OR CONSTANT TENSION HYDRAULIC MOTOR; A COUNTERBALANCE VALVE HYDRAULICALLY LOCKS THE WINCH AND KEEPS THE LOAD FROM DROPPING; A SPRING APPLIED HYDRAULIC RELEASE BRAKE ACTS AS A PARKING BRAKE; Part Name Assigned by Controlling Agency: VALVE,SAFETY RELIEF; End Item Identification: WINCH ASSEMBLY; BOAT DAVIT, MODEL D6000FCT. 0 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.