Danfoss control valve insert (003H6890) — replacement / service control insert for AVQM pressure-independent control valves and combined controllers, PN 16, kVS 6.3 m³/h. The insert is the interchangeable seat-and-cone cartridge that sets the kVS/flow characteristic of the AVQM valve body; matching a valve body with the correct insert selects the required flow capacity without changing the body. Permissible media: District heating/cooling circulation water. Genuine Danfoss spare — order code 003H6890, EAN 5702421553688. Data quoted verbatim from store.danfoss.com (code 003H6890).