The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-412-7604, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Evac North America Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-412-7604 |
| Primary Part Number | 3500040-003 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Evac North America Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | WATER |
| Thread Size and Series/type Designator | 3/4-14 NPT FIRST END |
| Valve Discharge Flow Rate | 5.0 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 |
|---|---|
| 3500040-003 | Evac North America Inc (USA) |
| Reference | Meaning |
|---|---|
| 3500040-003 | 5/9 Secondary reference Envirovac Inc Dba Monogram Systems-Rockford Div |
| GC-5.0GPM | 3/9 Design control — primary reference Eaton Corp Controls Div |
NSN 4820-01-412-7604 is a Valve,calibrated Flow, manufactured by Evac North America Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-412-7604 has 1 manufacturer part number on file: 3500040-003 (Evac North America Inc).
Key specifications for 3500040-003: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 11 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.