Danfoss TWA-K electrothermal (thermal-wax) valve actuator, OEM order code 088H3147. The TWA-K converts a switching signal from a room thermostat or controller into valve movement on hydronic floor-heating manifolds and radiator/zone valves — no auxiliary air or hydraulics. Normally closed (NC) — the valve is closed when de-energised and opens when the actuator is powered. Supply voltage 230 V AC (50/60 Hz), power consumption 2 W. M 30 x 1.5 threaded connection; fits valve bodies and manifolds with the standard M 30 x 1.5 valve thread. 10 m connecting cable. Enclosure rating IP41. Net weight 457 Gram. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 088H3147). OEM P/N 088H3147, EAN 5702425131264.