The Valve,check, cataloged under National Stock Number 4820-01-533-5843, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Val-Matic Valve and Manufacturing Corporation. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-533-5843 |
| Primary Part Number | 8800 W 8" |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Val-Matic Valve and Manufacturing Corporation |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Material Document and Classification | ASTM A536, GRADE 65-45-12 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B584, C83600 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Disk Loading Method | SPRING |
| Material | IRON BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Material | COPPER ALLOY 836 FLOW CONTROL DEVICE |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 8800 W 8" PRIMARY | Val-Matic Valve and Manufacturing Corporation (USA) |
NSN 4820-01-533-5843 is a Valve,check, manufactured by Val-Matic Valve and Manufacturing Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-533-5843 has 1 manufacturer part number on file: 8800 W 8" (Val-Matic Valve and Manufacturing Corporation).
Key specifications for 8800 W 8": Flow Control Device: DISK; Material Document and Classification: ASTM A536, GRADE 65-45-12 ASSN STD SINGLE MATERIAL RESPONSE BODY; Material Document and Classification: ASTM B584, C83600 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE; Disk Loading Method: SPRING. 8 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.