3、When installing the check valve, first,you should observe the two ends of the check valve in detail, then find out the water inlet port of the check valve, and then connect the water inlet port of the check valve and the water outlet port of the water pipe together. The check valve will operates when water flows from the inlet port of the check valve.
4、The water inlet port of the check valve is usually located at the lower position of the check valve, and the water outlet port of the check valve is generally located at the upper position of the check valve. When the water pressure of the water flowing into the check valve exceeds a certain value, the valve of the check valve will automatically open, and then water will flow out of the water outlet port of the check valve.

5、When the water pressure of the water flowing into the check valve is lower than a certain value, the phenomenon of backflow of water will occur in the check valve, and the valve of the check valve will also be automatically closed, and no water will flow out of the water outlet port. Through the above water flow phenomena, it can be detected whether the check valve is installed correctly.

Before installing the check valve, you must master the correct installation method, and install it strictly according to the installation steps, so as to avoid affecting the normal use.