What is the difference between Harbin electric steam butterfly valve and stop valve? Vulcanized rubber ring seal is generally used for soft seal type, and metal ring seal is generally used for hard seal type. According to the connection form, it can be divided into looper flange and wafer type connection; According to the transmission system method, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.
、 At present, the use of electric ball valve is common, because this kind of ball valve often needs to work under high pressure and for a long time, so problems are relatively common. For the corresponding inspection and maintenance of ball valve, we need to pay attention to some very important situations. Let's learn about them as follows:
