How to repair the leakage of Ningbo electric UPVC butterfly valve? Safety valves are used for safety protection in case of medium overpressure. Includes various types of safety valves.
、 The temperature pointer of the pneumatic butterfly valve is made of the sealing ring material. If the temperature is less than or equal to 80 degrees, the rubber sealing material should be used. The rubber sealing material can be divided into three types, namely, ethylene propylene rubber material, which is mainly used to combat aging; Nitrile rubber material can resist the invasion of oil substances; Abrasion resistant rubber material.
