We are offering soft sealing flange butterfly valve. soft-sealing flange butterfly valve, the product made of rubber seal butterfly valve, valve plate and valve stem. working temperature: 80 120 . application: foodstuff, medicine, chemical industry, petroleum, electric power, textile, paper . standard: gb, jb, hg, api, ansi, din, jis, kis, jpi, bs standard and we can design and manufacture as your requirements. features and benefit:1, modern design, reasonable, light weight, quick opening and closing. 2, easy to operate, labor-saving. 3, easy installation, maintenance free. 4, seal can be replaced, reliable sealing, bidirectional zero leakage. 5. Sealing material: anti-aging, corrosion-resistant and long service life.