Danfoss AB-QM DN 10 LF — low-flow pressure-independent balancing and control valve (PICV) for the terminal branches of heating and cooling systems where design flows are small. A built-in differential-pressure controller keeps the flow through the settable orifice constant regardless of pressure fluctuations elsewhere in the network, so each terminal delivers its design flow without manual re-balancing; the presetting dial fixes the maximum flow (settable) and the valve also acts as a shut-off. DZR brass body, Eurocon (ISO 228/1) connection, AB-QM 3.0, PN 16, nominal flow 0.15 m³/h, media temperature -10 °C to 120 °C. Supplied with pressure test plugs for flow verification. Actuator connection M30 x 1.5. OEM P/N 003Z1281. EAN 5710104094144. Technical data quoted verbatim from store.danfoss.com (code 003Z1281).
| Code number | 003Z1281 |
| Type | AB-QM |
| Version | AB-QM 3.0 |
| Product group | Pressure independent balancing and control valves |
| Description | AB-QM DN 10 Low flow, Eurocon, with test plugs, pressure independent balancing and control valve |
| Valve size | DN 10 Low flow |
| Valve body material | DZR brass |
| Connection types | External thread ISO 228/1 |
| Actuator connection | M30 x 1.5 |
| Test plugs | With test plugs |
| Flow nominal [m³/h] | 0.15 m³/h |
| Stroke [mm] | 2.25 mm |
| Pressure class | PN 16 |
| Differential pressure [kPa] [Max] | 600 KPa |
| Media temperature [°C] [Min] | -10 °C |
| Media temperature [°C] [Max] | 120 °C |
| Contains batteries | No |
| EU RoHS compliance | Yes with exemptions |
| EU RoHS exemption clause | 6(c) |
| China RoHS compliance | Out of scope |
| Net weight | 0.398 Kilogram |
| Gross weight | 0.398 Kilogram |
| Volume | 0.903 Liter |
| EAN | 5710104094144 |
| Material | Valve body DZR brass |
| Pressure rating | PN 16 |
| Temperature range | -10 °C to 120 °C (media) |
| MOQ | 1 |
AB-QM LF is the low-flow body for small terminal design flows — one per fan coil / small coil circuit. Select by pipe size (DN 10) and required design flow (nominal 0.15 m³/h); the presetting dial fixes the actual maximum. Fit a compatible M30 x 1.5 actuator for modulating or on/off control. The integral test plugs allow flow/Δp verification at commissioning. Eurocon connection variant.