The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-534-4598, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Oshkosh Defense Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-534-4598 |
| Primary Part Number | 3386191 |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-534-4598 is a Valve,regulating,system Pressure, manufactured by Oshkosh Defense Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-534-4598 has 2 manufacturer part numbers on file: 550200 (Advance Auto Air Conditioning, Inc. Dba Advance Auto Air Conditioning), 3386191 (Oshkosh Defense Llc).
Key specifications for 3386191: Part Name Assigned by Controlling Agency: BLOCK VALVE - VALVE,EXPANSION; End Item Identification: 2320-01-465-2174 MK23, 2320-01-465-2176 MK25, 2320-001-465-2180 MK27, 2320-01-465-2182 MK28, 2320-01-465-2186 MK29, 2320-01-465-2189 MK30, 2320-01-530-5693 MK31, 2320-01-465-2260 MK36, 2320-01-504-5218 MK37, PART OF ARMOR KIT. 0 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.