The Chamber,air Ejector Assembly, cataloged under National Stock Number 4320-01-238-0831, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Graham 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4320-01-238-0831 |
| Primary Part Number | E-14700-221 PIECE 5 |
| Item Name | Chamber,air Ejector Assembly |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Graham Corp |
| Status | ACTIVE |
| General Characteristics Item Description | COPPER ALLOY |
| 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-14700-20 | Graham Corp (USA) |
| E-14700-221 PIECE 5 PRIMARY | Graham Corp (USA) |
| Reference | Meaning |
|---|---|
| E-14700-221 | D/9 Drawing number reference only Graham Mfg Co Inc for Procurement Use CAGE Code 1lcx3 |
| B-14700-20 | 5/9 Secondary reference Graham Mfg Co Inc for Procurement Use CAGE Code 1lcx3 |
| E-14700-221 PIECE 5 | 3/9 Design control — primary reference Graham Mfg Co Inc for Procurement Use CAGE Code 1lcx3 |
NSN 4320-01-238-0831 is a Chamber,air Ejector Assembly, manufactured by Graham Corp, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-238-0831 has 2 manufacturer part numbers on file: B-14700-20 (Graham Corp), E-14700-221 PIECE 5 (Graham Corp).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-238-1752. Verify interchangeability with system specifications before substitution.
Key specifications for E-14700-221 PIECE 5: General Characteristics Item Description: COPPER ALLOY. 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.