Brand Name: HD
Model Number: FM-B-D
Place of Origin: Jiangsu, China (Mainland)
Installed on manifold for heating system to control the flow rate ofr different rooms .The regulating of flow meter helps to balance the flow rate of different rooms .
Range of FM-A( red one) : 0.6-2.4l/min
Range of FM-B-D(black one) : 5-0.5l/min