What are the advantages of Butterfly Valves?
1, opening and closing it is quick, energy, and fluid resistance small, can often operating. 2, simple structure, appearance of small size, structure length short, small volume, light weight, suitable for large diameter valve. Three, can carry the mud, and in apertures liquid stored up at least. 4, low, can achieve good seal. 5, regulation performance. 6, wide open seat effective circulation channel area is larger, fluid resistance smaller. 7, opening and closing torque is small, due to the shaft on both sides of the butterfly plate by medium basic equal role, and produce torque in opposite directions, thus opening and closing more effort. 8, seal face material generally USES rubber, plastic, so low pressure seal performance is good.http://www.zzpv-valves.com