Der binne in protte faktoaren te beskôgje by it selektearjen fan in axial split case pump en waaier korrekt. 

Earst moatte wy witte wêr't de floeistof ferfierd wurde moat en mei hokker streamsnelheid. De fereaske kombinaasje fan holle en stream wurdt it plichtpunt neamd. It plichtpunt is direkt relatearre oan 'e fereaske waaiergeometry. Applikaasjes mei lange fertikale pompen (hege kop) fereaskje waaiers mei gruttere bûtendiameter as applikaasjes mei koarte fertikale pompen (pompen).

Another consideration that is directly related to impeller size is the expected solids content in the application. Many applications have a variety of solids in the pumped media. These solids can range from small abrasive debris such as sand or metal shavings to fine fibrous materials to large solids the size of a baseball or larger. The pump and impeller selected must be able to pass these solids while avoiding clogging and damage from wear. Additional consideration must also be given to the equipment downstream of the axial split case pump. While a pump can be selected to pass a specific type of solids, it cannot be assumed that the downstream piping, valves, and other process equipment will have the same solids handling capabilities. Knowing the expected solids content in the liquid is critical not only to selecting the right size pump and impeller, but also to selecting the impeller style that best suits the application.

Ien fan 'e meast foarkommende waaiers foar behanneling fan fêste stoffen is de iepen waaier. Dit waaier wurdt faak brûkt yn riolearring en ôffalwettersuvering en hat in mjitkunde dy't omfiemet passaazjes tusken de blêden mei de iepen kant facing de ynlaat. De romten tusken de blêden jouwe in glêd paad foar de waaier om ynkommende fêste stoffen út it waaier-suiggat nei de volute te triuwen en úteinlik troch de pompútfier.

In oare opsje foar it behanneljen fan fêste stoffen is de draaikolk as ynspringende waaier. Dit soarte fan waaier wurdt monteard binnen in casing (it meitsjen fan in grutte iepen romte tusken de waaier en de suction haven) en induces floeibere beweging troch vortices makke troch de flugge rotaasje fan de waaier. Hoewol dizze oanpak net sa effisjint is, leveret it in protte foardielen foar trochgong fan fêste stoffen. De wichtichste foardielen binne grutte frije romte en minimale obstruksje foar trochgong fan fêste stoffen.

Pumps used at high altitudes have their own set of solids handling considerations. Since these applications typically use smaller piping, the solids passage size of the entire system must be considered, not just the pump. Typically, the axial split gefal pump manufacturers offering high-pressure pumps will include a strainer at the inlet to prevent large solids from entering the pump. This is ideal for high-pressure applications where minimal solids are expected, but can cause clogging if enough solids accumulate around the screen surface.

There are many factors to consider when choosing the right axial split gefal pomp and impeller, and understanding the various styles of pumps and impellers is often one of the most critical steps.