The Valve,check, cataloged under National Stock Number 4820-01-296-6874, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Alfa Laval 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-296-6874 |
| Primary Part Number | 984.3517100 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Alfa Laval Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 984.3517100 PRIMARY | Alfa Laval Inc (USA) |
| 9843550100 | Alfa Laval Inc (USA) |
| Reference | Meaning |
|---|---|
| 984.65001.05 | D/9 Drawing number reference only Alfa Laval Inc |
| 984.65001.05 ITEM13 | 5/9 Secondary reference Alfa Laval Inc |
| 984.35501.00 | 5/9 Secondary reference Alfa Laval Inc |
NSN 4820-01-296-6874 is a Valve,check, manufactured by Alfa Laval Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-296-6874 has 2 manufacturer part numbers on file: 984.3517100 (Alfa Laval Inc), 9843550100 (Alfa Laval Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-296-6881, 4820-01-296-9346. Verify interchangeability with system specifications before substitution.
Key specifications for 984.3517100: Style Designator: STRAIGHT THRU; Special Features: NIREX ALFA-LAVAL INC WATER DISTILLER MODEL NO. JWP-36-125,W/BRINE EJECTOR W; Media for Which Designed: WATER, FRESH SINGLE RESPONSE; Valve Operation Method: AUTOMATIC. 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.