SWING CHECK VALVE WORKING PRINCIPLE

• Posted by SLV alve 23 May 2022 - Filed in Arts & Culture - #Swing Check Valves  - 25 views

  Swing Check Valves, also known as check (flow) valves, are automatic valves used to prevent medium backflow on one-way flow pipelines. They rely on the pressure of the pipeline medium to automatically open or close the valve.

  　　There are three types of valves: valve type, double valve type and multi-valve type, which are one of the more commonly used valves. Swing check valve - generally suitable for pipelines with relatively clean fluid media, not suitable for high viscosity or containing solids

  　　Otherwise, the check valve will be insensitive to open, unable to achieve complete sealing, and the check of the fluid will not be reliable enough. The swing check valve only allows the medium to flow in one direction.

  　　Effectively prevent the backflow of the medium to prevent accidents.

  　　Swing check valve working principle:

  　　The disc and rocker of the swing check valve are connected together, and can rotate around the pin shaft at a certain angle. When the pipeline fluid flows in the specified direction (from left to right), the inlet pressure of the valve disc is higher than the outlet pressure

  　　At this time, the valve disc is pushed away from the valve seat and rotates around the pin shaft to a certain position, and the valve is in an open state. When the pressure difference on both sides of the valve disc is reduced to - timing, the valve disc falls and returns to the closed state. when the fluid is

  　　Flow from right to left, that is, when the reverse flow is reversed, the pressure on the right side of the valve disc is higher than the pressure on the left side, and the force generated by the pressure difference on both sides presses the valve disc on the valve seat, and the fluid cannot pass through, then the medium cannot pass. backflow;

  　　And the greater the fluid pressure, the tighter the sealing surface is, and the better the sealing effect is.