M30 × 1.0 (e.g. Oventrop, Beulco); 2 × N-inserts (black) and 2 × S-inserts (white); Danfoss
adaptor RA 2000 (Ø 22 mm); Giacomini adaptors
Description of operation
The actuator has an electrically heated expansion element protected against overload, which trans
fers its stroke directly to the attached valve. It operates noiselessly and is maintenance-free. If the
heating element is turned on when it is cold (ambient temperature approx. 21 °C), the valve begins
opening after a warming-up time of approx. 2.4 min, and after an additional period of approx. 2.7 min.
it has carried out a stroke of 4.5 mm. When the actuator is controlling, it moves to the desired stroke
position depending on control voltage y. An adjustment (heating up) of 1 mm is performed in approx.
30 s and the stroke is monitored by an inductive sensor. The closing operation is practically symmetri