Затворы обратные

Wafer Butterfly Check Valve is an energy-saving product, is manufactured based on the foreign advanced technology and in accordance with relative international standards. This product is featred bu excellentretaining performance , high safety and reliablity and low resistance . It is suitable for systems in the industries of perochemical, food processing, medicine,textile, paper-making, water supply and drainage,metallurgy,energy and light industry etc. Features Small and light, compact in structure,easy inmitenance.Two torsion springs are used excerting on each of the pair valve plate,which close the plate quickly and automaticlly.The quick-close action prevent the meidum from flowing back and eliminates water hammer effectly.Can be installed both horizontaly and vertical on pipeline.Safe and reliable in operation, high interference-resistance.The connection dimensions of flanges meets the standards of GB4216.4-4216.5-84The face to face dimensions are in accordance with GB12221-89 ISO5752-82