Danfoss RLV — manual lockshield radiator valve for two-pipe hydronic heating systems, OEM order code 003L0141. The RLV is a return-side lockshield valve with an integral drain-off feature, allowing an individual radiator to be shut off and drained/filled for maintenance without affecting the rest of the system. Regulation and isolation are set with a 6 mm hex socket under a screw-on cap. RLV DN 10, angle pattern. Body brass, finish Nickel plated. Connection to system Rp 3/8, connection to radiator R 3/8 (Internal thread), Kvs 1.8 m³/h. Max. working pressure 10 bar, test pressure 16 bar, flow temperature up to 120 °C. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 003L0141). OEM P/N 003L0141, EAN 5702420030975. HS 8481.80.