The Valve,check, cataloged under National Stock Number 4820-01-313-4126, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Calgon Carbon Uv Technologies Llc Dba Hyde Marine. Government technical data includes 4 specifications, 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 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 | 4820-01-313-4126 |
| Primary Part Number | 983405 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Calgon Carbon Uv Technologies Llc Dba Hyde Marine |
| Status | ACTIVE |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Disk Loading Method | SPRING |
| Material | STEEL BODY |
| 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 |
|---|---|
| 983405 PRIMARY | Calgon Carbon Uv Technologies Llc Dba Hyde Marine (USA) |
NSN 4820-01-313-4126 is a Valve,check, manufactured by Calgon Carbon Uv Technologies Llc Dba Hyde Marine, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-313-4126 has 1 manufacturer part number on file: 983405 (Calgon Carbon Uv Technologies Llc Dba Hyde Marine).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-606-4545. Verify interchangeability with system specifications before substitution.
Key specifications for 983405: Mounting Position: HORIZONTAL OR VERTICAL; Disk Loading Method: SPRING; Material: STEEL BODY; Valve Operation Method: AUTOMATIC. 4 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.