The Valve,check, cataloged under National Stock Number 4820-01-591-0935, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Apco/valve & Primer Corp. Government technical data includes 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-591-0935 |
| Primary Part Number | 102,5.8 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Apco/valve & Primer Corp |
| Status | ACTIVE |
| Operating Pressure | 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL COMP 1018 STEM |
| 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 |
|---|---|
| 102,5.8 PRIMARY | Apco/valve & Primer Corp (USA) |
| 102,5.8 PARTS P/N 102,5.8 | Apco/valve & Primer Corp (USA) |
NSN 4820-01-591-0935 is a Valve,check, manufactured by Apco/valve & Primer Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-591-0935 has 2 manufacturer part numbers on file: 102,5.8 (Apco/valve & Primer Corp), 102,5.8 PARTS P/N 102,5.8 (Apco/valve & Primer Corp).
Key specifications for 102,5.8: Operating Pressure: 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Special Features: FLAPPER MATERIAL BUNA-N (STEEL REINFORMED) MATERIAL STANDARDS BRONZE NAVY M ASTM B584 BRASS B16 STEEL AISI 1018 STEEL ASTM A36; Part Name Assigned by Controlling Agency: RUBBER FLAPPER SWING CHECK VALVE; Material: STEEL COMP 1018 STEM. 2 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.