Butterfly valve can be divided according to the structure of the bias plate, vertical plate, inclined plate and lever. Butterfly valve can be divided according to the form of sealing more sealed and hard seal two. Rubber seals are generally used rubber ring seal, hard seal is usually used metal ring seal. According to the connection type can be divided into flange connection and the clamp connection; According to the transmission can be divided into manual, gear transmission, pneumatic, hydraulic and electric several. The advantages of butterfly valves are as follows: 1. Opening and closing fast and easy, labor-saving, fluid resistance is small, you can often operate. 2. Simple structure, small size, light weight. 3. Can transport mud, liquid storage in the mouth of pipe at least. 4. Low pressure, can achieve a good seal. 5. Regulate the performance. The shortcomings of the butterfly valve are as follows: 1. The working pressure and working temperature range is small. 2, poor sealing.
When using Electric Garden Tiller, it's suggested to carry the extension cord on your shoulder. It is a safe practice. And the Electric Hand Tiller we sell includes a brake system in order to protect the user. What's more, replaceable blade can prolong the service life of electric garden Tiller.
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