The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-245-2750, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Deltrol Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-245-2750 |
| Primary Part Number | EF25S |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Deltrol Corp |
| Status | ACTIVE |
| Flow Control Device | BALL |
| 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 | STEEL BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 0.375-18 NPTF FIRST END |
| Valve Discharge Flow Rate | 10.0 GALLONS PER MINUTE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EF25S PRIMARY | Deltrol Corp (USA) |
| Reference | Meaning |
|---|---|
| EDF25S | 5/9 Secondary reference Deltrol Corp |
NSN 4820-01-245-2750 is a Valve,calibrated Flow, manufactured by Deltrol Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-245-2750 has 1 manufacturer part number on file: EF25S (Deltrol Corp).
Key specifications for EF25S: Flow Control Device: BALL; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 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.
NSN 4820-01-245-2750 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.