The Valve,safety Relief, cataloged under National Stock Number 4820-01-386-3336, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-386-3336 |
| Primary Part Number | 1982C 1IN X 1.50IN 85PSI SET |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.500 INCHES FIRST END IN |
| Nominal Thread Size | 1.000 INCHES SECOND END IN |
| Material | STEEL COMP 304 FLOW CONTROL DEVICE |
| Material | STEEL COMP 304 BODY |
| Thread Series Designator | NPT ALL ENDS |
| Opening Pressure Setting | 85.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 1982C 1IN X 1.50IN 85PSI SET PRIMARY | Ashcroft Inc Dba Heise (USA) |
| 315086ASSY1982C 1X1.50IN 85PSI | Ashcroft Inc Dba Heise (USA) |
NSN 4820-01-386-3336 is a Valve,safety Relief, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-386-3336 has 2 manufacturer part numbers on file: 1982C 1IN X 1.50IN 85PSI SET (Ashcroft Inc Dba Heise), 315086ASSY1982C 1X1.50IN 85PSI (Ashcroft Inc Dba Heise).
Key specifications for 1982C 1IN X 1.50IN 85PSI SET: Flow Control Device: DISK; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: ANGLE. 12 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.