Mityvac Selectline Hand PumpMityvac Selectline Hand Pump Mityvac offers a selection of six basic hand held vacuum pressure models, one Silverline and five Selectiline. Each is featured in the chart below, and differentiated by a combination of features and options described on the previous pages. By offering such a wide selection, you can maximize the value and performance of your hand pump by choosing the exact features the best meet the requirements of your application. Model