300X slow-closing check valve structure features and uses 

　　300X slow-closing check valve consists of main valve, check valve, needle valve, ball valve, micro-filter and pressure gauge to form a hydraulic control take-over system. With automatic hydraulic operation, the main valve can be optimally opened or closed. Prevent the occurrence of water hammer and water hammer to achieve the effect of slow closing and noise reduction. 
　　This product utilizes hydraulic self-power control, does not require other devices and energy, is easy to maintain, and is stable and stable. 
　　This series of valve products are widely used in high-rise buildings, living areas and other water supply pipe network systems and urban water supply projects. 

Working principle of 300X slow-closing check valve 

　　When the valve feeds water from the inlet end, the water enters the main valve control room through the micro-filter, needle valve and check valve, and then drains to the downstream through the ball valve. Since the needle valve opening degree is smaller than the ball valve opening degree, that is, the drainage speed of the main valve control chamber is greater than the water inlet speed, the control chamber pressure is lowered, 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 part of the return water enters the main control room through the ball valve. Due to the check valve function, the return water cannot flow out from the main control room, causing the main control room to gradually increase pressure and slowly close the main valve. .

300X slow closing check valve technical parameters

300X slow-closing check valve main parts and materials

Main shape connection size