The Valve,safety Relief, cataloged under National Stock Number 4820-01-443-7590, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is F.c.kingston Co. Dba Storm Manufacturing. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-443-7590 |
| Primary Part Number | 112C-1/2-150 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | F.c.kingston Co. Dba Storm Manufacturing |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Opening Pressure Setting | 150.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 140.0 CUBIC FEET PER MINUTE |
| 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 |
|---|---|
| 112C-1/2-150 PRIMARY | F.c.kingston Co. Dba Storm Manufacturing (USA) |
NSN 4820-01-443-7590 is a Valve,safety Relief, manufactured by F.c.kingston Co. Dba Storm Manufacturing, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-443-7590 has 1 manufacturer part number on file: 112C-1/2-150 (F.c.kingston Co. Dba Storm Manufacturing).
Key specifications for 112C-1/2-150: Flow Control Device: BALL; Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU. 14 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.