The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4330-01-088-9155, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Allenair Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-088-9155 |
| Primary Part Number | S-1/4 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Allenair Corp |
| Status | ACTIVE |
| Material | COPPER ALLOY LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4330-01-088-9155 is a Pneumatic Muffler,exhaust-Intake, manufactured by Allenair Corp, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-088-9155 has 2 manufacturer part numbers on file: S-1/4 (Allenair Corp), 11668580 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for S-1/4: End Item Identification: MOTOR,PNEUMATIC,ALIEN AIR,MENEOL A,NY; Material: COPPER ALLOY LOCATION NOT OTHERWISE SPECIFIED. 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.