The Role And Features Of Check Valves

The main function of Check Valves is to block the flow, so that different material can be selected, which can prevent the flow of various media such as water and water vapor. The main materials are carbon steel and low-temperature steel and other types of metal materials. Its main features are fast valve flap closing speed, long service life, and more reliable performance.

In the water pump outlet pipeline, due to the sudden change of the valve opening, closing, stopping, etc., the flow in the pipeline changes abruptly, and thus causes the change of momentum per unit time, which will inevitably generate the corresponding inertial force, thus causing the sudden pressure in the pipeline. The alternating phenomenon of rising and falling. The phenomenon in which the velocity and pressure of this type of fluid change over time and position are called a water hammer (or water hammer). The water hammer in the pump room includes starting water hammer, valve closing water hammer, and pump stop water hammer (sudden power failure, etc.). Under normal operating procedures, neither of the first two types of water hammers will cause danger and unit safety issues. The water hammer pressure value formed in the latter case is often larger, which is prone to accidents.

The pressure change at the back of the pump will be directed towards the water outlet along the water outlet pipe in the form of a water hammer wave, and then reflected back by the water outlet pool, forming a complex water hammer phenomenon in the water outlet pipe. The check valve product can choose a waterproof hammer check valve.