[Prevents fluid dripping]
It can be adjusted to optimal drainage by combining it with a fine-speed type speed controller.

[Operational principle]
When using a fluid, apply air pressure to the operation port and lower the diaphragm.
When stopping the fluid, releasing the air from the operation port to the atmosphere will cause the diaphragm to rise due to the force of the spring and the volume inside the drip prevention valve to increase, preventing the fluid from dripping.