Normally closed.
Wavin 24V 2 Wire Normally Closed UFH Actuator
UFH 230V ACTUATOR, 2 WIRE, 2 WATT, M30 X 1.5 MANIFOLD NORMALLY CLOSED *BLACK*
Wengart Underfloor Heating Actuator WG2208, AC 230V Thermal Electric Actuator for Manifold, M30 x 1.5mm Thread, Normally Closed 2-Wire with Visible Stroke Indicator
Wengart Underfloor Heating Actuator WG2213, AC 230V Thermal Electric Actuator for Manifold, M30 x 1.5mm Thread, Normally Closed 2-Wire with Visible Status Indicator, Energy-Efficient, IP54
5X Actuator for Underfloor Heating Manifolds Normally Closed (NC) - 230V 2-wire
Wengart Normally Open (NO) Underfloor Heating Actuator WG2209, AC 230V Thermal Electric Actuator, M30 x 1.5mm Thread, 2-Wire Replacement with Visible Status Indicator, IP54, 100N
