The Black Berkey Elements Primer is a hand-powered priming pump that makes it possible to prime the brand’s parts easily offline, without the need for faucets or hose connections. This product is designed to saturate the filters with water prior to their use, allowing for clean water production anywhere. The Black Berkey primer also purges, or back-flushes, the elements using air instead of water to clean the proprietary pores of the compressed carbon filter wall. This reduces the amount of time and effort needed to dry the filters prior to storing them. This primer tool is specially designed for the brand’s elements only and can be cleaned using mild soap and water. Features: Complete assembly and maintenance instructions Brand: Berkey Filters Manufacturer Part Number: primer-bbp Manufacturer: Berkey Assembled Product Dimensions (L x W x H): 12.00 x 12.00 x 12.00 Inches