Check Valve

One-way milk or check valve

Non-return or check valves, as the name implies, are valves that allow fluid to flow in only one direction and are used in many cases, such as domestic and industrial applications, for example, to allow water to enter the valve. The side of the building is placed so that in case of water cut, the amount of water stored in household appliances and inside the pipes does not return to the main pipe or he puts the inlet pipe of water heaters which store water inside the building due to water cut or breakage. Do not empty the heater water tank. Because the furnace may continue to work and cause the water heater to burn, and also in refineries, a one-way valve is placed on the outlet pipe of the pump, which after transferring the required amount of petroleum products, and closing the pump or emergency shutdown of the pump can not send materials. Come back. The check valve includes input and output ports for fluid input and output unilaterally without the need for external control. One of the most important factors in choosing a check valve is the minimum pressure to operate the check valve. In terms of check mechanism, different models such as ball check valve or ball and diaphragm check valve or diaphragm check swing check valve or tilting disc check valve or disc and stop-check valve, lift-check valve, duckbill valve.

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