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Check valves

Check valves prevent fluids or gases from flowing back into an installation. The purpose of a check valve is therefore to allow the flow in only one predetermined direction and this is done automatically, in contrast to valves operated by means of a handwheel or lever. These valves often serve to protect pumps and auxillary flow products in your installation, but also as extra safety when the pressure in your pipes drops.

At Fluxer you can come to us for a wide range of tailor-made solutions. Based on your medium and temperature, we determine the ideal valve type.

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Operation of non-return valve

As soon as the flow in your pipes is reversed, the non-return valve will be closed by the resulting pressure. A sufficiently large pressure difference is therefore required to obtain a good seal. If the pressure difference is too small to close a valve properly, a spring-loaded non-return valve is chosen. The spring provides extra force to close this valve. In this case, however, it must be ensured that the dynamic force of the fluid is balanced with the weight and force of the spring so that the non-return valve opens sufficiently.

Once installed, the permissible flow direction is fixed. There is always an arrow on the housing indicating the direction of flow. Although non-return valves are suitable for all media, they are mainly used for liquids.