Diaphragm Metering Pumps
This type of metering pump will require you to be a bit more knowledgeable about the pump valves, as well as proper priming and adjustment characteristics. Once you understand the pump and work within its normal limits, you should be assured of a successful program.
Peristaltic Metering Pumps
Peristaltic metering pumps are a good choice when pumping dirty fluids that may contain trapped gases or particulate matter, into lower pressure systems. Newer peristaltic pump designs are capable of pressures to 124 psi.
There are more tubing options available for modern peristaltic metering pumps, offering more chemical resistance and longer tube life.
Tube failure has been well addressed with Blue-White’s Exclusive, Patented Tube Failure Detection system (U.S. patents 7,001,153 and 7,284,964).
These pumps are initially easier to begin using than diaphragm metering pumps.
Peristaltic & Diaphragm metering pumps –
Diaphragm metering pumps excel at pumping clean, aggressive chemicals into high-pressure systems, and require very little maintenance. A variety of wetted parts materials are available for chemical resistance. However diaphragm pumps can lose their prime, and can be difficult to prime, especially if the fluid is dirty or contains trapped gases.
Peristaltic metering pumps excel at pumping dirty fluids that contain trapped gases or particulate matter into lower pressure systems. Modern peristaltic pump designs are capable of pressures to 124 psi. Peristaltic pumps will require periodic changing of the pump tube.
Research and a good understanding of both the installation requirements, and the pump’s operating parameters and maintenance requirements, are vital to choosing the best pump for your application.