How many solenoid valves are required to control the opening and closing of pneumatic telescopic butterfly valve? 2. The sealed floating ball pneumatic ball valve of the floating pneumatic ball valve has simple structure and good sealing performance, but the load of the working medium borne by the ball is all transferred to the outlet seal ring, so whether the seal ring material can withstand the working load of the ball medium is the key. Generally speaking, sealing rings are made of elastic materials such as polytetrafluoroethylene, and metal and non-metallic materials form a sealing pair, which is usually called soft seal.
Generally, when the input locator signal increases, the output gas signal of the locator increases as a positive action, and vice versa (the output gas signal of the locator decreases) as a reaction. The positive and negative action of the locator monomer is independent of the actuator and valve body.
