As you already know, this is a careful process that requires a lot of consideration.
In this video, we’d like to review some of the most important elements that need to be reviewed before designing your next diaphragm pump.
Selecting a diaphragm pump
THE PUMPING TEMPERATURE
VISCOSITY
OPERATING PRESSURE When we consider how the pump will be installed or used, there are a few basic considerations. For example, where will the pump draw fluid from? Will the pump be standing on the base of a tank? If we have this type of configuration, where the pump is piped directly from the bottom of the tank, as soon as we open the tank valve, the fluid will flood the pump and it’ll be primed. This is what’s known as flooded suction. On the other hand, the pump may be located above the fluid level. In this instance, the pump is standing on a floor and the suction hose or pipe will go down below the pump into a sump or basement. The pump will be required to draw the water from below it, otherwise known as self-priming. In both instances, the suction head is derived from the highest or lowest fluid point above or below the pump.
You should always take the worst case scenario and design a pump to address that condition. In the end, selecting the right diaphragm pump is a careful process.