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Check valve refers to a valve whose opening and closing part is a circular disc and acts by its own weight and medium pressure to block the back flow of the medium.

Handheld ultrasonic flow meters use clamp-on sensing to measure liquid flow. The installation process is extremely simple, and the full Chinese man-machine interface is easier to operate.

Gate valve are widely used in different industries, it is a kind of valve that medium connection and shut- off but not suitable for regulating.

The gate valve is an opening and closing gate. The movement direction of the gate is perpendicular to the direction of the fluid.