Cast Iron Lined Rubber Butterfly Check Valve

The valve body of our cast iron lined rubber butterfly check valve is made of high-quality cast iron materials such as gray cast iron and ductile iron, which has high strength and rigidity. The rubber material lining the inside of the valve is the core advantage of the cast iron lined rubber wafer check valve. The rubber lining fits tightly inside the valve body to form a smooth corrosion-resistant surface, effectively isolating the contact between the medium and the cast iron matrix, preventing the cast iron from being corroded, while reducing the flow resistance of the medium and increasing the service life of the valve.

Product advantages

(I) Excellent corrosion resistance

The application of rubber lining enables the cast iron lined rubber wafer check valve to adapt to a variety of corrosive media, greatly broadening the application range of the valve. Whether it is strong acidic, strong alkaline media, or organic solvents, it is difficult to cause corrosion to it, which effectively solves the shortcomings of traditional cast iron valves in corrosion resistance and provides reliable protection for pipeline systems that transport corrosive media.

(II) Good sealing performance

The elasticity of rubber materials makes the valve perform well in sealing. The rubber seal between the valve disc and the valve seat and the internal rubber lining layer can maintain a good sealing state under various working conditions, prevent medium leakage, meet the strict requirements of industrial production for sealing performance, and avoid medium leakage from causing harm to the environment and operators.

(III) Save space and cost

The wafer-type installation structure makes the valve compact and does not require too much space during installation, which is especially suitable for pipeline layouts with limited space. In addition, it is easy to install and disassemble, which reduces installation and maintenance costs, shortens the maintenance time of the pipeline system, improves production efficiency, and saves manpower and material resources for enterprises.

(IV) Long service life

The high strength of the cast iron base and the corrosion and wear resistance of the rubber lining combine to make the cast iron rubber-lined wafer-type check valve have a long service life. Under normal use and maintenance conditions, it can operate stably for a long time, reducing the frequency of valve replacement, reducing the cost of the entire life cycle of the equipment, and bringing good economic benefits to users.

Technical parameters

Application scenarios

1. Chemical industry: In the chemical production process, a large number of corrosive acid and alkali solutions, organic solvents and other media are used. Cast iron lined rubber wafer check valves are widely used in chemical raw material delivery pipelines, reactor inlet and outlet pipelines, etc. due to their excellent corrosion resistance. For example, in the delivery pipelines of acidic media such as hydrochloric acid and sulfuric acid, EPDM rubber lining can effectively resist the corrosion of the medium, ensure the long-term stable operation of the valve, and prevent the leakage of the medium from causing harm to the environment and equipment.

2. Electroplating industry: A variety of electroplating solutions are required in the electroplating process, most of which are highly corrosive. Cast iron lined rubber wafer check valves are installed in the pipeline system of the electroplating production line to prevent the backflow of the electroplating solution, avoid the mixing of different electroplating solutions to affect the electroplating quality, and protect the pipelines and equipment from corrosion, ensuring the smooth progress of electroplating production.

3. Food and beverage industry: Although the food and beverage media themselves are less corrosive, they have extremely high requirements for hygiene. Cast iron lined rubber wafer check valves lined with food-grade rubber such as nitrile rubber meet food hygiene standards and can be used in food and beverage delivery pipelines to prevent medium backflow contamination and ensure food safety. At the same time, its smooth rubber lining is easy to clean and meets the strict requirements of the food industry for pipeline hygiene.

4. Sewage treatment industry: During the sewage treatment process, sewage will be exposed to various sewage containing corrosive substances, such as acid, alkali, and salt. Cast iron lined rubber wafer check valves can effectively prevent sewage backflow and avoid damage to sewage treatment equipment. At the same time, its corrosion-resistant rubber lining can resist the erosion of harmful substances in sewage, extend the service life of the valve, and play an important role in the pipeline system of sewage treatment plants.