The Stem,fluid Valve, cataloged under National Stock Number 4820-01-494-3185, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sea-Tech Systems, Inc. Dba Sea Tech Systems. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-494-3185 |
| Primary Part Number | 70-1904 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sea-Tech Systems, Inc. Dba Sea Tech Systems |
| Status | ACTIVE |
| Material | PLASTIC |
| 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 |
|---|---|
| 70-1904 PRIMARY | Sea-Tech Systems, Inc. Dba Sea Tech Systems (USA) |
| Reference | Meaning |
|---|---|
| G-1904 | 5/9 Secondary reference Sea-Tech Systems, Inc. Dba Sea Tech Systems |
NSN 4820-01-494-3185 is a Stem,fluid Valve, manufactured by Sea-Tech Systems, Inc. Dba Sea Tech Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-494-3185 has 1 manufacturer part number on file: 70-1904 (Sea-Tech Systems, Inc. Dba Sea Tech Systems).
1 possible match (shared part number, not a government interchangeability claim): 8465-01-507-5635. Verify interchangeability with system specifications before substitution.
Key specifications for 70-1904: Special Features: SUPPLIER, SEA-TECH SYSTEMS CALLS G-1904 REPLACEMENT STEM FOR GLASS FILLER; HANDLE IS MADE OF LEXAN PLASTIC; End Item Identification: DRINKING FOUNTAIN;G-1900 GLASS FILLER,SINGLE,1/2IN.N.P.T. IN; Material: PLASTIC. 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.