The bottom valve itself has a certain weight, so that the suction pipe is vertical, and the suction pipe is perpendicular to the chemical barrel. In addition, it is also a reverse check valve to keep the positive flow of chemical liquid. The bottom valve also helps to improve the accuracy of the pump. And normal liquid absorption. The filter prevents the solid particles from sucking into the suction pipe and small solids. The suction particles may damage the diaphragm of the metering pump. The bottom valve also includes the connector for connecting the suction pipe. The bottom valve should be installed vertically. The bottom valve stays within a certain distance from the bottom of the tank.
Most pump-bottom valve selections for self-starting operations are necessary. Injection valves are suitable for the connection between the drain line and the injection point. Injection valves cannot be used as isolating devices or as protection against siphons. Under the circumstances, the injection valve can produce back pressure of 0.5bar.
The cleaning equipment is used to clean the head of the metering pump and the discharge pipe. The chemical substances mainly used for measurement are easy to cure, and the metering pump needs to be often idled.
The float switch is a very critical means of controlling the tank level. When the water level drops, the float is sinking and the contacts in the switch are closed. This contact can be used to control the metering pump, eg to stop the metering pump, start the metering The pump can also be used to connect the alarm/indicator to indicate that the barrel is empty. The float switch can be applied by the reverse action of the float. In the collection tank, indicate that the collection tank is full and the metering pump is stopped.