How do you size a Gamajet to work with an existing pump?
To answer this question, one must first determine what type of pump is being using. There are two main families of pumps that work with Gamajet Tank Cleaning machines. The first is a centrifugal or impeller style of pump, the second is a positive displacement pump. A centrifugal pump moves the wash water with the veins of a rotating impeller. By its nature, as the back pressure in a system builds the pump begins to “slip”, i.e. the flow rate drops as the resistance increases. This style of pump can be “dead headed” (zero flow rate) for short periods of time without damage or danger to a properly configured system. A Gamajet is typically sized to work close to the centrifugal pump’s best efficiency point. This type pump is commonly used in Gamajet IV, VI, VIII, IX, and some Gamajet V applications. A positive displacement, PD, pump moves the wash water by a more mechanical and constant means (piston, plunger, mechanical diaphragm, etc.). This style of pump is usually rated for a certain
