What is the difference between the check valve and the check valve?
Check valves, Dan Xiangfa, check valves are all valves of a different name, and its role is to prevent the flow of fluid back in the pipe.
The same thing is the flue check valve. We need to contact the manufacturer
The same thing, the different name, the appraisal finishedPrices vary greatly, probably due to specifications, material, performance and other differences
1, spring: the liquid from the bottom up, rely on the pressure spring controlled valve, the pressure disappears, the spring force the valve, sealing liquid backflow. Often used in the smaller diameter check valve.2, gravity: and spring similar to rely on the valve's own gravity closed to prevent backflow.3, swing type: liquid in the valve straight through, relying on the pressure to open the side of the rotating valve flap, after the loss of pressure, the valve depends on the weight back, the reverse of the liquid pressure closed valve. Other one-way valves (check valves), such as the sewage check valve, air defense explosion-proof valve and liquid use of the principle of the check valve is very similar.
