Overview of working principle
The Faucet Slow Opening Spool is designed to control the water flow rate of the faucet so that the water flows out slowly and steadily when it is turned on. This design is intended to improve the comfort and water conservation of water use. Its working principle can be summarized as follows:

Internal structure design:
Spiral channel: The valve core may be designed with a spiral channel or a special flow channel structure. When the faucet is turned on, the water needs to pass through these complex channels to flow out, which naturally slows down the speed of the water flow.
Damping element: The valve core may also contain damping elements, such as rubber gaskets, springs or other elastic materials, which will generate a certain resistance when the water flows through, thereby further slowing down the water flow.
Fluid dynamics principle:
Flow control: By adjusting the opening angle and channel area of ​​the valve core, the water flow through the valve core can be controlled. In the Faucet Slow Opening Spool, this control is designed so that the water flows out at a slower speed in the initial stage, and as the valve core is further opened, the water flow rate gradually increases but remains relatively stable.
Pressure balance: The structural design inside the valve core may also include a pressure balance mechanism to ensure stable water flow control under different water pressures. This helps prevent sudden changes in water flow rate caused by water pressure fluctuations.
Operation method:
When the user rotates the faucet handle, he is actually controlling the degree of opening of the valve core. As the handle rotates, the channel inside the valve core gradually opens, allowing water to flow through. Due to the special design of the valve core, the water flow will be hindered and regulated to a certain extent when passing through, thereby achieving the effect of slow opening.