Cast iron square flap door It is suitable for overflow and check function in all kinds of pipes and canals in water supply and drainage and sewage treatment projects, and can also be used for various shaft covers; it is only used for circular, square or rectangular outlet of unidirectional flow, with simple structure and reliable operation, and can be connected with flange or embedded parts.
1. Indicate the material (cast iron or steel), if not, it shall be produced as cast iron.
2. The reverse water head shall not exceed 8m. Please indicate the water head when it exceeds.
3. Flange connection is preferred for installation. When embedded parts are used for connection, please refer to the embedded steel plate form in the sample of cast iron copper inlaid gate.
4. The standard of round flap door flange is GB / t9119-2000, pn0.25mpa