The Valve Assembly,inlet, cataloged under National Stock Number 4240-01-220-0547, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4240-01-220-0547 |
| Item Name | Valve Assembly,inlet |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | C/O BODY,INLET VALVE,PN 5-1-1405;ACTUATOR,DUCT SHUTOFF,PN 5-1-1412; ACTUATOR,FLOW CONTROL,PN 5-1-1411; CHECK VALVE,PN 5-1-1403; L 90 BRANCH,PN 5-1-1364; VALVE FLOW CONTROL,PN 5-1-1329; CAM,FLOW CONTROL,PN5-1-1330;DUCT,SHUTOFF,PN 5-1413; E-RING,MS16633-4017; AIR DEFLECTOR,PN 5-1-1443 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 5-1-1410 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4240-01-220-0547 is a Valve Assembly,inlet, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5930-01-339-1832, 5340-01-691-4688. Verify interchangeability with system specifications before substitution.
Key specifications for 4240-01-220-0547: General Characteristics Item Description: C/O BODY,INLET VALVE,PN 5-1-1405;ACTUATOR,DUCT SHUTOFF,PN 5-1-1412; ACTUATOR,FLOW CONTROL,PN 5-1-1411; CHECK VALVE,PN 5-1-1403; L 90 BRANCH,PN 5-1-1364; VALVE FLOW CONTROL,PN 5-1-1329; CAM,FLOW CONTROL,PN5-1-1330;DUCT,SHUTOFF,PN 5-1413; E-RING,MS16633-4017; AIR DEFLECTOR,PN 5-1-1443. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.