Fan-wheel liquid-sealed anti-reverse water meter Name: fan-wheel liquid-sealed anti-reverse water meter for cold water Category: plastic shell water meter-> Model number: lxsy-15/z-20/z Specification: 15-20 Content: meter design 1. High quality materials(frpa), corrosion resistance. 2. The measuring mechanism can be exchanged. Special features 1. Overload flowrate:qs=2qp(qn=nominal flowrate) 2. Digital-wheel and register are sealed with special with special liquid 3. Clearly reading for a long time 4. Steady and reliable performance 5. Measuring accuracy is up to iso 4064b 6. Anti-reverse water meter, it can be calculated normally when installation is reverse direction of flow. Working condition Water temperaturef_300c Working pressuref_1mpa Feature curve diagram: Reading error:between qs. Flowrate and qt flowrate Max.Reading errorf+2% Between qt flowrate(not including qt):max.Reading errorf+5% Anti-reverse, it can be read nomally and the reading error qp is positive value when meter installed reversedly. Carton box