The Valve,pneumatic Inflator, cataloged under National Stock Number 4220-01-535-6085, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Mirada Research & Manufacturing, Inc.. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4220-01-535-6085 |
| Primary Part Number | B-52040 |
| Item Name | Valve,pneumatic Inflator |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Mirada Research & Manufacturing, Inc. |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PROTECTIVE CAP |
| Connection Type | THREADED EXTERNAL PIPE SINGLE END |
| Nominal Thread Size | 0.500 INCHES SINGLE END IN |
| Material | ALUMINUM ALLOY |
| Thread Series Designator | NPT SINGLE END |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| B-52040 PRIMARY | Mirada Research & Manufacturing, Inc. (USA) |
NSN 4220-01-535-6085 is a Valve,pneumatic Inflator, manufactured by Mirada Research & Manufacturing, Inc., classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-535-6085 has 1 manufacturer part number on file: B-52040 (Mirada Research & Manufacturing, Inc.).
Key specifications for B-52040: Furnished Items and Quantity: 1 PROTECTIVE CAP; Connection Type: THREADED EXTERNAL PIPE SINGLE END; Nominal Thread Size: 0.500 INCHES SINGLE END IN; Special Features: FLANGE INTERFACE THREAD -- 1.063 IN-12UN; INLET DIA IS 0.875 IN; WEIGHT IS 0.09 LB; OVERALL HEIGHT IS 1.844 IN; STANDOFF ABOVE FLANGE IS 0.375 IN; WRENCH HEX SIZE IS 1.375 IN LBS. 6 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.