The Valve,check, cataloged under National Stock Number 4820-01-567-4890, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Warren Alloy Valve and Fitting Co Inc. Government technical data includes 12 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 | 4820-01-567-4890 |
| Primary Part Number | 3156 2.50IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Warren Alloy Valve and Fitting Co Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Bolt Circle Nominal Diameter | 5.500 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Material Document and Classification | ASTM A351 CF8M ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Valve Size | 2.500 INCHES IN |
| Nominal Outside Diameter | 7.000 INCHES ALL ENDS IN |
| Face to Face Distance | 8.500 INCHES IN |
| Material | STEEL CORROSION RESISTING BODY |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.690 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 3156 2.50IN PRIMARY | Warren Alloy Valve and Fitting Co Inc (USA) |
NSN 4820-01-567-4890 is a Valve,check, manufactured by Warren Alloy Valve and Fitting Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-567-4890 has 1 manufacturer part number on file: 3156 2.50IN (Warren Alloy Valve and Fitting Co Inc).
Key specifications for 3156 2.50IN: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Bolt Circle Nominal Diameter: 5.500 INCHES ALL ENDS IN; Connection Type: FLANGE ALL ENDS. 12 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.