The Valve,safety Relief, cataloged under National Stock Number 4820-01-593-6331, 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 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-593-6331 |
| Primary Part Number | MG30BDA PL PG.1, ITEM 23CP |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Supplementary Features | THE MG-30BD IS DESIGNED TO SEPARATE NITROGEN FROM A COMPRESSED AIR SYSTEM AND BOOST THE GAS UP TO 3,000 PSI FOR STORAGE OR IMMEDIATE USE. THIS NITROGEN CAN BE USED FOR FILLING TIRES, STRUTS, INERTING FUEL SYSTEMS AND OTHER USES REQUIRING NITROGEN PURITIES OF 99.5 PERCENT OR GREATER. THE MG-30BD IS COMPRISED OF A NITROGEN GENERATING MEMBRANE SYSTEM AND A RIX 2V3 BOOSTER COMPRESSOR. EACH GENERATOR/COMPRESSOR PRODUCES 2250-3000 PSI, 0.5-10 SCFM OIL-FREE NITROGEN AT A CRANKSHAFT SPEED OF 410-570 RPM WITH 100-150 PSIG INLET AIR PRESSURE. RPM |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| 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 |
|---|---|
| MG30BDA PL PG.1, ITEM 23CP | Naval Inventory Control Point Mechanicsburg (USA) |
| X515-851-55CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| X515-851-55 | 3/1 Design control — primary reference Rix Industries |
| MG30BDA PL PG.1, ITEM 23 | 5/1 Secondary reference Rix Industries |
NSN 4820-01-593-6331 is a Valve,safety Relief, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-593-6331 has 2 manufacturer part numbers on file: MG30BDA PL PG.1, ITEM 23CP (Naval Inventory Control Point Mechanicsburg), X515-851-55CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for MG30BDA PL PG.1, ITEM 23CP: Supplementary Features: THE MG-30BD IS DESIGNED TO SEPARATE NITROGEN FROM A COMPRESSED AIR SYSTEM AND BOOST THE GAS UP TO 3,000 PSI FOR STORAGE OR IMMEDIATE USE. THIS NITROGEN CAN BE USED FOR FILLING TIRES, STRUTS, INERTING FUEL SYSTEMS AND OTHER USES REQUIRING NITROGEN PURITIES OF 99.5 PERCENT OR GREATER. THE MG-30BD IS COMPRISED OF A NITROGEN GENERATING MEMBRANE SYSTEM AND A RIX 2V3 BOOSTER COMPRESSOR. EACH GENERATOR/COMPRESSOR PRODUCES 2250-3000 PSI, 0.5-10 SCFM OIL-FREE NITROGEN AT A CRANKSHAFT SPEED OF 410-570 RPM WITH 100-150 PSIG INLET AIR PRESSURE. RPM; Criticality Code Justification: ZZZY; Special Features: NUPRO SS-4R3A5 177-R3A-F1-A 55-PSI SETPOINT; End Item Identification: MG30BDA , NITROGEN GENERATOR. 3 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.