Advantages and disadvantages of cast iron concentric soft sealing butterfly valve

Butterfly valve, also known as flap valve, bf valve, is one regulating valve with simple structure, butterfly valve can be used for the switch control of low pressure pipeline systems. The opening and closing part(valve plate or valve disc) of the butterfly valve is a round disc which rotates around the valve shaft of the butterfly valve to open and close the medium flow. 

Butterfly valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Butterfly valve mainly is used as the cutting-off and throttling device on the pipelines. 

With different structure design, butterfly valves can be divided into concentric butterfly valves(or called center line butterfly valve) and eccentric butterfly valve. For eccentric butterfly valves, there are single eccentric butterfly valves, double eccentric butterfly valve, triple eccentric butterfly valves.

Today we are going to introduce the advantages and disadvantages of concentric soft sealing butterfly valves: 

Advantages of cast iron concentric soft sealing butterfly valves: 

1.The opening and closing of cast iron concentric soft sealing butterfly valve is convenient and quick, labor-saving, and the fluid resistance of concentric soft sealing butterfly valve is small, so the concentric soft sealing butterfly valves can be operated frequently; 

2.The cast iron concentric soft sealing butterfly valve has simple structure, small size, and light weight. 

3.Cast iron concentric soft sealing butterfly valve can be used to deliver mud, and the liquid accumulated at the pipe mouth is the least. 

4.Under low pressure conditions, cast iron concentric soft sealing butterfly valve can achieve good sealing effect. 

5.The cast iron concentric butterfly valve has great adjustment performance. 

6.When the cast iron concentric soft sealing butterfly valve is fully opened, the effective flow area of the valve seat channel is larger, and its fluid resistance is smaller. 

7.The opening and closing torque of concentric soft sealing butterfly valve is small, Because the butterfly plates on both sides of the rotating shaft are basically equally affected by the medium, and the direction of the torque is opposite, so the opening and closing of concentric soft sealing butterfly valve is relatively labor-saving. 

8.The sealing surface of cast iron concentric soft sealing butterfly valve is generally made of natural rubber, or plastic, so under low pressure condition, the sealing performance of concentric soft sealing butterfly valve is good. 

9.The cast iron concentric soft sealing butterfly valve can be installed easily. 

10.The cast iron concentric soft sealing butterfly valve is flexible and labor-saving to operate, the concentric soft sealing butterfly valve can be operated by manual lever, manual hand wheel, electric actuator, pneumatic and hydraulic actuator. 

Disadvantages of cast iron concentric soft sealing butterfly valve: 

1.The working pressure and working temperature range of cast iron concentric soft sealing butterfly valve are small. Cast iron concentric soft sealing butterfly valves cannot be used for high pressure and high temperature pipelines. 

2.The sealing effect of concentric soft sealing butterfly valve is poor. 

Belo Valve is one Chinese factory for concentric butterfly valves, including cast iron concentric butterfly valves, ductile iron concentric butterfly valves, stainless steel concentric butterfly valves, concentric wafer end butterfly valves, concentric wafer lug end butterfly valves, concentric flange end butterfly valves, manual lever operated concentric butterfly valves, manual hand wheel operated concentric butterfly valves, electric actuator operated concentric butterfly valves, pneumatic cylinder operated concentric butterfly valves, etc. for concentric butterfly valve price, cast iron concentric butterfly valves price, ductile iron concentric butterfly valve price, resilient seated concentric butterfly valves price, or concentric butterfly valve data sheets, welcome to contact us: