LK 810 2.0 Wilo - Female thread LK 810 ThermoMat 2.0 W is also available with a circulating pump that is controlled by PWM signal. For more information please contact our sales department. × × Article no. Type Return temp. °C Dim. A mm B mm C mm D mm E mm F mm Weight (kg) Save in my item list 181664 with check valve55F 1"216195195255821204.0 181669 without check valve60F 1"216195195255821204.0 Other temperatures and dimensions on request.