Product Description ISO 4064 Valve Controlled Smart Water Meter prepaid Flow Meter DN15 DN20 DN25 Valve Controlled prepaid water meter Diameter mm 15 20 25 Turndown Ratio Q3/Q1 ≥100 Q4(overload flow) m3/h 3.125 5 7.875 Q3(constant flow) m3/h 2.5 4 6.3 Q2(boundary flow) m3/h 0.05 0.064 0.1008 Q1(minimum flow) m3/h 0.025 0.04 0.063 Pressure loss p ≤63 Maximum Pressure Allowed MPa ≤1 Working Frequency MHz 470-510 Battery Life year ≥6 Remote Style / LoRa Transmit Power dBM ≤20 Valve Work Power mA 45 constant Current uA ≤5 controlled cold water prepaid water meter 1.Main features: *Prepaid function: users buy water before use, non-payment shut off valve and no water. *One-card function: one card to realize the control and use of water, electricity, gas and other smart meters. 2.Display synchronization function: The liquid crystal display and the mechanical part display synchronization, even if the circuit has a fault liquid crystal can not display, also can refer to the mechanical display. 3.Warning and alarm function: Battery under voltage, insufficient available water consumption, strong magnetic interference and other fault information, will be prompted on the LCD alarm. 4.Data feedback function: *every time the user buys water and swipes the card, it will bring the relevant information back to the management system, so that the management party can know the water situation. *Valve self-maintenance function: the valve rotates regularly to remove the valve scale in time to ensure the flexibility of the valve. 5.Prevent water hoarding function: *The software can set a flexible recharge limit to prevent users from hoarding water. *Prevent dripping function:cooperate with base table, realize prevent dripping function. *Water inspection function: you can query the users who have not purchased water for a long time or whose water consumption is abnormally low, and check the abnormal users. ISO 4064 Valve controlled water meter prepaid water meter smart flow meter More choose for smart water meter As the basis, the mechanical water meter can add more modules and functions to achieve the transformation of the smart water meter. the Ultrasonic smart water meter shell colors also can decide by customers. Wired remote water meters Photoelectric direct reading water meter Pulse water meter ModBus water meter M-Bus 485 flow meters Wireless remote flow meter FSK water meters LoRa smart flowmeter LoRa Wan water meters NB-loT water meter GPRS/4G water meter Bluetooth water meter Cat-1 water meters Infrared water meter Water meter data sampling mechanical water meter( Reed tube water meter, Hall water meter, Non-magnetic radar water meter) ultrasonic water meter electromagnetic flowmeter Hotsales water flow meter Ultrasonic hot and cold water meter Valve Controlled Prepaid Water Meter Ultrasonic heat flow meter Mechanical Water Meter Large Diameter Smart Flow Meter IC Card Smart Prepaid Water Meter Click above the water meter images to get more informations of the smart water meter flow meter mechanical water flowmeter DN15 DN20 DN25 Plastic Water Meter Multi Jet Water Meter Dry Type Mechanism Price negotiable condominiums flow meter Material Color Optional Mechanical Water Meter Water Seal Copper Mechanical Water Meter Hot Water Mechanical Flowmeter Multi Jet Magnetic Dry Brass Water Meter Dial and Mechanism Packaging & Shipping Company Profile Order instructions 1. The products are