The Valve,safety Relief,oxygen Syste, cataloged under National Stock Number 4820-01-587-5526, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-587-5526 |
| Primary Part Number | D084-1000-070CP |
| Item Name | Valve,safety Relief,oxygen Syste |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Furnished Items and Quantity | 2 NUT AND 2 TAILPIECE |
| Nominal Pipe Size Accommodated | 0.750 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | SOCKET WITH BRAZING RING FIRST END |
| Connection Style | SOCKET WITH BRAZING RING SECOND END |
| Criticality Code Justification | ZZZY |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED INTERNAL PIPE SECOND END |
| Style Designator | ANGLE |
| Operating Pressure | 440.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +51.0 TO 70.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SCREW |
| Maximum Operating Temp | 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | THREADED |
| Media for Which Designed | OXYGEN, GASEOUS BODY |
| Material | STEEL COMP 304 STEM |
| Material | BRONZE BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | STEEL COMP 304 SEAT |
| Opening Pressure Setting | 70.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| D084-1000-070CP | Naval Inventory Control Point Mechanicsburg (USA) |
| D084-1000 ASSY D084-1000-070CP | Cold Llc (USA) |
| D084-1000 ASSY D084-1000-070CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| D084-1000 ASSY D084-1000-070CP | 5/9 Secondary reference U.S. Government activity |
| D084-1000-070 | 5/9 Secondary reference U.S. Government activity |
| D084-1000 | D/9 Drawing number reference only U.S. Government activity |
| D084-1000-070 | 3/1 Design control — primary reference Cold Llc |
NSN 4820-01-587-5526 is a Valve,safety Relief,oxygen Syste, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-587-5526 has 3 manufacturer part numbers on file: D084-1000-070CP (Naval Inventory Control Point Mechanicsburg), D084-1000 ASSY D084-1000-070CP (Cold Llc), D084-1000 ASSY D084-1000-070CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for D084-1000-070CP: Flow Control Device: DISK; Furnished Items and Quantity: 2 NUT AND 2 TAILPIECE; Nominal Pipe Size Accommodated: 0.750 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN. 24 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.