Kinder Morgan Treating leases pressurized NGL storage tanks that are 6,000 water gallons to 30,000 water gallons, and 250 psig rated vessels. Tanks can be placed in tandem if needed, to allow for increased or decreased demand. A typical NGL tank set-up consists of: back pressure valves, internal relief valves, internal flow valves, header system, two (2) pneumatic emergency shut down systems, level gauges and other assorted controls.