Check the listing for details. Dwyer Instruments 0-40 GPH Water Flowmeter RMB-84-SSV. Condition: Used. Listed at 54.99 USD. This Dwyer Instruments water flowmeter is a reliable and efficient tool for measuring water usage in various applications. With a capacity of measuring up to 40 gallons per minute, this meter is suitable for a wide range of industries and commercial settings. The RMB-84-SSV model is designed to provide accurate and precise measurements, making it an ideal choice for those who require high-quality water flow meters. The brand name DWYER is synonymous with excellence in the industry, and this meter is no exception. Ideal for use in electrical usage meters, test meters and detectors, and other applications, this water flowmeter is a must-have for anyone who needs to measure water usage with accuracy. Its durable construction and reliable performance make it a great choice for businesses and industrial settings.