In metallurgy, chemical industry, building materials and glass and power stations, and other industries, electric butterfly valve is widely used for ventilation and plumbing. They are used as flow adjusting equipment of gas medium and jam. If seal is not good?

there are several reasons for electric butterfly valve is not fully closed.

let's talk about the common electric simply rubber butterfly valve, hard seal partial local butterfly valves.

first of all, the electric soft sealing butterfly valve ( The butterfly valve from nodular cast iron, rubber seal is made)

the electric butterfly valve is typically used for opening and closing the corrosive water at room temperature. It leaks for two reasons:

1. Butterfly plate corrosion. Since it is ductile iron, so the valve plate will rust and with the passage of time and cause leakage.

2。 Rubber seat is damaged, turned on and off for a long time, lack of rubber abrasion resistance, seal damage.

3。 Electric actuators because debugging are not available, which can lead to leakage.

the butterfly valve is used for relatively harsh working conditions, is usually a high temperature steam, thermal oil, etc. The main reasons of leakage is on the surface of the seal leakage:

1. High temperature cavitation will damage the sealing surface.

2。 Fine particles and hard particles caused by long time.

3。 Butterfly valve tray with porosity.

many times by seal damage electric butterfly valves, electric butterfly valve in operation during the sealing is poor. This is usually due to the impact and corrosion on the surface of the liquid in a sealed for a long time. Under certain liquid velocity, liquid contained in the sealing surface, long impact small particles which can cause some performance loss, make whole sealing is not strong and leak.

production data and processing quality of sealing surface is the cause of this situation. Mainly reflected in the quality of the sealing surface cracks, porosity and the appearance of the pinch. In addition, the artificial operation error, the equipment is not reasonable, and insufficient protection is also the important cause leading to the electric butterfly Industrial Valves sealing problem. Through the reasonable management can avoid this situation.

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We are professional in manufacturing ductile iron gate valve, and always emphasize the technology and quality during the producing procedure.