Rule 7700D GPH Evacuator High Volume Utility Pump - 12V7700D GPH Evacuator High Volume Utility Pump 12V The Rule Evacuator high volume utility pump is ideal for fast evacuation of water from a vessel. A favorite of tow boat operators, the Evacuator is comprised of two 4,000 gallon per hour (GPH) or 15,141 liters per hour (LPH) pumps in tandem, with a net volume at open discharge of 7,700 GPH or 29,148 LPH. The Evacuator pump is a useful utility pump for non marine applications as well, including