Vane type pumps. 

 - videocassette (VHS)(22 min.) :  sd., col. 1/2 in. 
<br/><br/> Vane type pumps are but one of a large variety of pumps that are used to move a liquid from one place to another.  This instructional video describes the features of three of the balanced design units. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pumping machinery--Study and teaching.<br/>Vane type pumps--Study and teaching.