Rotary pumps supplied by Parekh & Company, are made to distribute the lubricating oil in mechanical equipment. In addition, these are utilized to deliver pressure for hydraulic operating systems. These are utilized to lubricate the internal gears as well as bearings of pumps. These are functional as the positive displacement pumps which are also utilized as the self-priming pumping solutions. Rotary pumps give near constant delivered capacity and have been designed with small clearances. These are designed to function at slow speeds and higher speeds as well as maintain the clearances when they are exposed to erosion.