- For small valves VVP47.., VXP47.. and VMP47.. - For retrofitting the small valves 2W.., 3W.. and 4W.. with adapter AL100. Electromotoric actuators for modulating or 3-position control of small valves for terminal units and heating and cooling zones. With position indication, manual control, automatic stroke adaption, force-dependent switching off in the end positions and plug-in type connecting cable.For fitting to the valve: Cap nut M30 x 1.5. SSP81.., SSP61.. are CE, C-tick, UL and cUL listed.