■ Features and Applications

The 300X slow closing check valve consists of a main valve, a one-way valve, a needle valve, a ball valve, a micro filter, and a pressure gauge to form a hydraulic control connection system. By utilizing hydraulic automatic operation, the main valve can be

To achieve the optimal opening or closing speed. To prevent the occurrence of water hammer and achieve the effect of slow closing and noise reduction.

This product utilizes hydraulic self control, does not require other devices or energy, is easy to maintain, and has smooth opening and slow closing.

This series of valve products is widely used in water supply network systems such as high-rise buildings and living areas, as well as urban water supply projects.

■ Structural images

■ Working principle

When the valve supplies water from the inlet end, the water enters the main valve control room through a micro filter, needle valve, and one-way valve, and then drains downstream through a ball valve. Because the needle valve opening is smaller than the ball valve opening

Degree, that is, the drainage speed of the main valve control room is greater than the inlet speed, so the pressure in the control room decreases, and the inlet pressure acting on the lower end of the main valve disc opens the main valve to supply water downstream.

When the pipeline stops supplying water, if the downstream water starts to flow back, a portion of the return water enters the main control room through the ball valve. Due to the action of the one-way valve, the return water cannot flow out of the main control room, and is diverted

Gradually increase the pressure in the main control room and slowly close the main valve.