Plastic Float Flowmeter Liquid Water Flow Meter Rotameter Rotermeter UPVC Pipeline Flowmeter 1 Pcs Plastic Float Flowmeter Liquid Water Flow Meter Rotameter Rotermeter UPVC Pipeline Flowmeter 1 Pcs Product Parameters Product Quantity:1Pcs Marked is the flow per hour Size:inner diameter 32mm Connection form:PVC glue adhesive Structure and principle of plastic flowmeter:It is mainly composed of a transparent plastic cone tube vertically mounted with the small end downward and the large end upward and a float that can move up and down in the cone tube as a measuring element, which is composed of nuts, nozzles, stops and "O" rings. When fluid flows from bottom to top in the cone tube, the pressure difference in float up and down, to float up, when the pressure difference and float gravity, buoyancy and viscous force in the force balance, float in a stationary position, when the flow changes, through the cone tube, and change of float ring gap between fluid flow, float up and down the pressure difference of the corresponding change, float to move up and down, so the height of the float rest position can be used as a measure of the flow. Product Photos