Danfoss AB-QM 4.0 CO⁶ Flexo (003Z1560) — a prefabricated DN 15 pressure-independent balancing and control valve (PICV) assembly for terminal heating/cooling connection. The integral differential-pressure controller holds the flow through the settable orifice constant regardless of pressure fluctuations in the network, so each terminal delivers its design flow without manual re-balancing. Connection: 1/2" internal thread. low flow range, nominal flow 0.2 m³/h. Pressure class PN 16, media temperature 0 °C to 90 °C (media). OEM designation "AB-QM 4.0 CO6 Flexo DN15 LF 1/2" int.". OEM P/N 003Z1560. EAN 5715162730928. Technical data quoted verbatim from store.danfoss.com (code 003Z1560).