Overview Reviews Product Description Belimo Replacement flow sensor for Belimo Energy Valve™, Ultrasonic 1 1/2" 40 Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Belimo Belimo M2440-EV Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments