... steel SummaryLZB-FL series rotary shunt flow meter is a kind of instrument composed by throttling device(orifice plate) of main pipeline ... FL series flowmeter are composed by main pipeline,main orifice,shunt pipeline,throttling orifice,rotameter and stop valves (optional).See Figure ... adopt to flange connection(or wafer),equip with DN15 rotameter,shunt pipeline with 1/2" size,also instal stop valve in ...