A microfluidic passive valve (MPV) is important for precise flow control. and it determines the reliability of the microfluidic system. In this paper. a novel MPV capable of delivering a constant flow rate independently of inlet pressure changes is proposed. https://www.jmannino.com/quick-offer-Viqua-F4-50-Plus-Monitored-UV-System-Powered-by-UVMax-15-gpm-230-Volt-on-sale/