The Valve,safety Relief, cataloged under National Stock Number 4820-01-686-7455, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Henry Technologies Limiteddba Chil-Con Products Div of. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-686-7455 |
| Primary Part Number | 5250-1/2-400 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Henry Technologies Limiteddba Chil-Con Products Div of |
| Status | ACTIVE |
| Style Designator | ANGLE |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 5250-1/2-400 | Henry Technologies Limiteddba Chil-Con Products Div of (CAN) |
| Reference | Meaning |
|---|---|
| 5250-1/2-400 | 3/9 Design control — primary reference Henry Technologies, Inc. |
NSN 4820-01-686-7455 is a Valve,safety Relief, manufactured by Henry Technologies Limiteddba Chil-Con Products Div of, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-686-7455 has 1 manufacturer part number on file: 5250-1/2-400 (Henry Technologies Limiteddba Chil-Con Products Div of).
Key specifications for 5250-1/2-400: Style Designator: ANGLE; Bonnet Type: OUTSIDE SCREW-YOKE; Part Name Assigned by Controlling Agency: VALVE,SAFETY RELIEF; End Item Identification: 52 SERIES PRESSURE RELIEF VALVES. 4 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.