Valve Co., Ltd., Henan like Germany offers a variety of valves: electric butterfly valve, manual valve, flanged butterfly valve, butterfly valve butterfly valve handle brand models signal type manual butterfly valve type extensions trench butterfly butterfly butterfly butterfly prices Fire Signal butterfly XDF The top of the valve opening and closing no electrical device, when the valve is closed by mistake 25% (full throttle 1/4), the electrical signal output device will be mistaken for a signal close to the fire control center. So this butterfly is the best accessory products Fire Sprinkler fire extinguishing system. Electrical characteristics of the device structure and working principle of the butterfly design on worm drive at the top of the device, and with the stem Direct drive, precision electromechanical devices within a fully enclosed, no valve opening degree indicator and imported machinery and electrical components antirust parts. The output signal of long-term stable and reliable. WBSX Fire Signal Butterfly simple structure, reliable sealing, open light, long life, easy maintenance. It is widely used in water supply and drainage, fire and other systems on a variety of pipeline construction, especially in the fire line. The valve can be unmistakable signal showing the valve switching, intuitive, clear and reliable fire protection system reflects the work of the state, so widely, a large number of suitable fire protection systems. www.zggnfm.com butterfly valve station station www.gnzhihuifa.com