FESTO solenoid valve does not work, analysis of the situation

Analysis of the failure of the FESTO solenoid valve:
FESTO solenoid valve is connected to the pipe. If the card is longer, it will not open. The card will be opened later. At first, I thought it was the pipe stuck in the valve core. After removing it, it was not stuck. The spool is still far away. I think it will be a problem of pressure. If the card's long-term pressure is too big, it won't open, or is there a problem with the valve? I hope that the experts can teach, thank you deeply! I took the solenoid valve off the pipe and turned it on every time. It just opened again on the pipe and I couldn’t open it. I moved the valve to the outside and only stuck less than 3 wires. Can only be opened, as long as you put it a little longer, it will not open again, very puzzled! To say that the coil and spool of such a solenoid valve should be good.

The different working pressure of the FESTO solenoid valve determines the difference of the torque, rated current and capacity of the solenoid valve. The vacuum solenoid valve means that the working pressure is vacuum (negative pressure) when the valve is opened, because the vacuum is relatively adsorbed. The force is larger, so the breaking torque of the valve is required to be larger, and the rated current and capacity are relatively larger. If it exceeds 5A, it is not recommended to be connected to the control loop (the general relay contact capacity is mostly 4A, 6A, and the control loop Generally equipped with a 5A fuse), it can be connected to the working circuit through the contactor. the above!

Germany Festo AG & Co. KG is the world's leading manufacturer of pneumatic and electric components, components and systems. Festo (China) Co., Ltd. is a wholly-owned subsidiary established in mainland China. The company has a large warehouse in Shanghai headquarters, which can provide customers with timely delivery and set up branches in 32 cities.
Festo's main products include: drives, valves and valve terminals, robot and assembly technology, air handling units, air lines and fittings, vacuum technology, positioning and quality inspection systems, sensors and control technology, teaching and training products. In addition, the company can customize special automation solutions for its customers. Festo products are used in a wide range of industries including textiles, rubber, plastics, gripping assemblies and industrial robots.