Danfoss RA-N — normal-flow valve with presetting, OEM order code 013G4205. The RA-N (normal flow) valve body accepts an RA/RTR-series thermostatic sensor or actuator on its clamp connection; the integral presetting device limits the design flow per radiator so a two-pipe system self-balances without a separate balancing valve. Presetting is stepped and read under the head. The RA-N version carries a G 3/4 external-thread tailpiece union connection. (RA-N DN 15, double angle left, dimension standard Other permitted.) Nominal size DN 15, double angle left pattern, connection G 3/4 (inlet) / R 1/2 (outlet) (external thread), Kvs 0.9 m³/h, max. working pressure 10 bar, test pressure 16 bar, max. differential pressure 0.6 bar, flow temperature up to 120 °C. Finish Nickel plated. Application: 2-pipe system. Net weight 0.284 Kilogram. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 013G4205). OEM P/N 013G4205, EAN 5702420048048. HS 8481.80.