What is a one-way valve?

Like its name implies, this type of valve navigation work flow of liquid or gas in a certain direction and prevent flow in the opposite direction.

* Application range :

One-way valves are used a lot in the technical systems of water, heat, steam, ventilation, fire fighting, air conditioning, waste treatment, ...
 

* Why use a one-way valve?

I look at a specific example: In a hydraulic system with integral pump station pumps operating in parallel coupling mutual interdependence, there is a problem when pressure drops in one or more pumps, part fluid flow will flow back to influence the operation of the whole system. This can only be overcome when we arranged a one-way valve mounted in the door of the pump speed, preventing backflow. That is why we should use a one-way valve to protect and ensure the operation of the hydraulic system, vim.

* The main form of one-way valve?

Here we have two main types include: Type sliding and revolving door types.
 

	Sliding	Turnstile shape
Basic structure image
The main parts of the valve	- Sliding element. - The substrate support. - Booster element.	- Rotating element. - The substrate support. - Booster element.
Installation Principles	- Installation on a horizontal tube	- Put on the tube horizontal or vertical
Symbol

* Operating principle:

In the normal state, ie when there is no flow of liquid or gas run through, parts sliding element (turnstile) of the valve will be in the closed position under the effect of its own weight or spring force . When the flow through the valve, with enough pressure will make this department were pushed out of the closed position and allow the flow to pass through. At the time of the flow of energy decreasing to 0, sliding element (turnstile) slowly back position and are holding on thanks PACKING outlet pressure of the valve, preventing the flow reversed. The whole process operations are fully automated under the action of liquid and gas.