The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-237-6900, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-237-6900 |
| Primary Part Number | 3420 ASSEMBLY 428 3IN |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Temp Rating | 180.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| End Connection Quantity | 2 |
| First End Connection Type | PLAIN FACE FLANGE |
| Material | COPPER ALLOY BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT |
| Media for Which Designed | WATER, FRESH |
| Valve Discharge Flow Rate | 430.0 GALLONS PER MINUTE |
| 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 |
|---|---|
| BAILY 428 3IN CAST IRON | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| 3420 ASSEMBLY 428 3IN PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 428 3IN DWG 342 | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-01-237-6900 is a Valve,relief,pressure and Temper, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-237-6900 has 2 manufacturer part numbers on file: BAILY 428 3IN CAST IRON (Leslie Controls, Inc. Dba Leslie Controls Inc), 3420 ASSEMBLY 428 3IN (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for 3420 ASSEMBLY 428 3IN: Flow Control Device: DIAPHRAGM; Temp Rating: 180.0 FAHRENHEIT DEGF; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 10 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.