Danfoss measuring orifice DN 450 PN 25 — fixed calibrated orifice fitted in the pipe to create a defined pressure drop for flow measurement in hydronic balancing circuits, used with a balancing instrument to read circuit flow. Kvs 3430 m³/h. Suitable for PN 16/25/40 flange systems. OEM designation "Measuring orifice DN450 (PN25)". OEM P/N 003Z2285. EAN 5702420118000. Technical data quoted verbatim from store.danfoss.com (code 003Z2285).
| Code number | 003Z2285 |
| Type | Measuring orifices |
| Product group | Manual balancing |
| Description | Measuring orifice DN450 (PN25) |
| Size | DN 450 |
| Kvs value | 3430 m³/h |
| Pressure class | PN 25 |
| Contains batteries | No |
| EU RoHS compliance | Out of scope |
| China RoHS compliance | Out of scope |
| Net weight | 30 Kilogram |
| Gross weight | 30 Kilogram |
| Volume | 46.06 Liter |
| EAN | 5702420118000 |
| HS code | 9026.90 |
| Kvs values [m³/h] | 3430 m³/h |
| Pressure rating | PN 25 |
| Standard size | Measuring orifice |
| MOQ | 1 |
Select the orifice by pipe size (DN 450); the Kvs value fixes the flow/pressure-drop relation used to compute circuit flow with a differential-pressure measuring instrument. For large-diameter risers and mains where a measuring balancing valve is not fitted. Confirm DN and flange class before ordering.