ProLine® 02465 Pro2000 Mini Vault Pump 4000 GPH. ProLine® Vaults Are Sturdy Housings Used In Self-Contained Waterfalls And Streams. They will accommodate submersible pumps up to 10,000 GPH and are specially designed to withstand clogs and heavy stones. Create your own dramatic natural looking water highlight that offers all the beauty and pleasing sounds of a waterfall in a fraction of the space. A self-contained waterfall or stream is easy to install and even easier to maintain. Best of all, it's pet and child safe. ProLine Pump Vaults are the basis for creating a long lasting, trouble-free installation.