The Seat,valve, cataloged under National Stock Number 4820-01-416-5953, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pulsafeeder Inc. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-416-5953 |
| Primary Part Number | J37440 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pulsafeeder Inc |
| Status | ACTIVE |
| Style Designator | PLAIN |
| Material | RUBBER POLYETHYLENE SEAT |
| Seating Surface Shape | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-416-5953 is a Seat,valve, manufactured by Pulsafeeder Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-416-5953 has 2 manufacturer part numbers on file: J37440 (Industrial Service and Supply, Inc), J37440 (Pulsafeeder Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-428-6921. Verify interchangeability with system specifications before substitution.
Key specifications for J37440: Style Designator: PLAIN; Special Features: PUMP,METERING; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: RUBBER POLYETHYLENE SEAT. 3 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.