The ball check valve is a check valve with a multi-ball, multi-channel, and multi-conical reverse flow structure. It is mainly composed of front and rear valve bodies, rubber balls, and cones. Its valve disc is a rubber-covered ball, so it is called a ball check valve. So what is the principle of the ball check valve? The working principle of the ball check valve is mainly to use the rubber ball to roll in a short stroke in the ball cover to realize the opening and closing of the valve. When the water pump is started, the water rushes the rubber ball under the action of pressure, causing the rubber ball to roll to the right side, and the cone in the rear valve body fixes its position, and the check valve opens; after the pump stops, due to the backwater pressure in the pipeline system, the rubber ball is forced to roll to the left front valve body to close the check valve. Since the seal of the ball check valve is a sphere covered with rubber, it has good sealing performance, good operation, and good water hammer resistance; and because the seal can be a single ball or multiple balls, it can be made into a large diameter.However, its seal is a hollow sphere covered with rubber, which is not suitable for high-pressure pipelines, but only for medium and low-pressure pipelines.
The micro-resistance ball check valve can be used for the outlet of the water pump of the cold water, hot water, industrial and domestic sewage pipe network to prevent the medium from flowing back. In order to prevent the medium from flowing back, the check valve should be installed on the equipment, devices and pipelines. Since the shell material of the ball check valve can be made of stainless steel and the hollow sphere of the seal can be coated with polytetrafluoroethylene engineering plastic, it can also be used in the pipeline of general corrosive media. Applicable occasions of ball check valve: 1. The butterfly double-flap check valve of the ball check valve is suitable for the water supply network of high-rise buildings, the pipe network with certain chemical corrosive media, the pipe network with limited installation space, and the sewage pipe network. 2. The lifting silent check valve is suitable for the pipe network with high quality requirements for water supply and drainage engineering; the pipe network with relatively high pressure requirements (PN2.5Mpa); it can be installed at the outlet of the ball check valve pump, which is an economical and practical anti-water hammer check valve.3. The lifting silencer check valve is suitable for water supply and drainage systems and high-rise building pipe networks. It can be installed at the outlet of the pump. With a slight change in structure, it can be used as a water suction bottom valve, but it is not suitable for sewage pipe networks. 4. Ball check valve - horizontal check valve is suitable for submersible, drainage, and sewage pumps, especially for sewage and sludge systems. 5. Swing rubber check valve is suitable for domestic water pipe networks; but it is not suitable for sewage with a lot of sediment. 6. The swing single-flap check valve is suitable for water supply systems, petroleum, chemical, metallurgical and other industrial sectors where there is a space limit for the installation of ball check valves.
