Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs for 4 Inch Cast Iron Backwater Valve, Lubricated Plug Valve, Electric Butterfly Valve, We wholeheartedly welcome customers all over the world come to visit our factory and have a win-win cooperation with us!
Keystone Valves Factories – Bi-Directional Butterfly Valve,DI,CI,Ductile Iron, Cast Iron, DN2000,DN1800,DN1600,DN1400,DN1200,DN1000,DN800 – UNIQUE Detail:
Elastic property of composite metal sealing ring perform zero leakage Torque seal to ensure persistent two-way zero leakage. The design of right-angled rotation with zero friction is implemented by the distinctive triple eccentric principle. It eliminates the friction between the seat and O-ring during 90deg rotation. STL one-piece hard seat can satisfy many working conditions, with long service life and easy maintenance. One-piece casting body, with face to face dimensions conforming to ISO5752, ASME B16.10 and API609, can replace high performance butterfly valves and other kinds of valves, to install easily and flexibly. Al l metal structure and zero leakage performance makes the valve with “natural fire protection safety” characteristic. Anti-blowout stem design is safe and reliable, fully conforming to the requirements of API609. The valve position indicator on the stem and the flange mounted at the top are useful to indicate the disc position. The stem is adopted as one piece of shaft structure, with pin or pin-key combination to connect the stem and disc.
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We hold strengthening and perfecting our items and repair. At the same time, we get the job done actively to do research and progress for Keystone Valves Factories – Bi-Directional Butterfly Valve,DI,CI,Ductile Iron, Cast Iron, DN2000,DN1800,DN1600,DN1400,DN1200,DN1000,DN800 – UNIQUE , The product will supply to all over the world, such as: Malta, Nairobi, Palestine, Our company always provides good quality and reasonable price for our customers. In our efforts, we already have many shops in Guangzhou and our products have won praise from customers worldwide. Our mission has always been simple: To delight our customers with best quality hair products and deliver on time. Welcome new and old customers to contact us for the future long term business relationships.