The Valve,vent, cataloged under National Stock Number 4820-01-535-1632, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Schroeder Industries Llc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,vent |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Schroeder Industries Llc (CAGE 08832) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-535-1632 |
| Primary Part Number | 11-NS-0965 |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Schroeder Industries 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 |
| Part Number | Manufacturer |
|---|---|
| 11-NS-0965 PRIMARY | Schroeder Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 218032618 | 5/2 Secondary reference U.S. Government activity |
| 2701-01-21.27-A | 5/9 Secondary reference Schroeder Industries Llc |
| 556-6406597 FIND MRFH-B43 | 5/1 Secondary reference Naval Sea Systems Command |
| D-6440 | D/9 Drawing number reference only Schroeder Industries Llc |
NSN 4820-01-535-1632 is a Valve,vent, manufactured by Schroeder Industries Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-535-1632 has 1 manufacturer part number on file: 11-NS-0965 (Schroeder Industries Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-544-5264. Verify interchangeability with system specifications before substitution.
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.