The Valve,safety Relief, cataloged under National Stock Number 4820-01-352-3716, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Manitou North America Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-352-3716 |
| Primary Part Number | R7409 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Manitou North America Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| R7409 PRIMARY | Manitou North America Inc (USA) |
| Reference | Meaning |
|---|---|
| PL52546-02 ITEM 6 | 5/9 Secondary reference Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel |
| 23548 | 5/9 Secondary reference Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel |
NSN 4820-01-352-3716 is a Valve,safety Relief, manufactured by Manitou North America Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-352-3716 has 1 manufacturer part number on file: R7409 (Manitou North America Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-366-5096, 6515-01-595-5609. Verify interchangeability with system specifications before substitution.
Key specifications for R7409: Special Features: 2.340 IN. LG; 1.097 IN W; 4 HOLES 0.257 IN. DIA IN; Valve Operation Method: AUTOMATIC. 1 specification is 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.