The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-657-7648, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pentair Filtration Solutions, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-657-7648 |
| Primary Part Number | 183-165-PG |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pentair Filtration Solutions, Llc |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING BODY |
| Outlet Pressure Setting | ERR-060 |
| 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 |
|---|---|
| 183-165-PG PRIMARY | Pentair Filtration Solutions, Llc (USA) |
| Reference | Meaning |
|---|---|
| MRS-600HE-II NO. 18 | C/1 Advisory reference — outside the item-of-supply concept Pentair Filtration Solutions, Llc |
NSN 4820-01-657-7648 is a Valve,regulating,fluid Pressure, manufactured by Pentair Filtration Solutions, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-657-7648 has 1 manufacturer part number on file: 183-165-PG (Pentair Filtration Solutions, Llc).
Key specifications for 183-165-PG: Part Name Assigned by Controlling Agency: PRESSURE REDUCING VALVE; End Item Identification: REVERSE OSMOSIS UNIT; Material: STEEL CORROSION RESISTING BODY; Outlet Pressure Setting: ERR-060. 2 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.