Peak 400-barrel (65-cubic-meter) upright tanks can accommodate any variety of fluids and surface topographies. To ensure operator safety, all upright tanks feature ladders and fall arrest systems.

For water containment, upright tanks are available in sloped (non-lined), slope-lined and flat bottom options, which feature 4 x 4-inch butterfly valves. Upright tanks can also utilize steam coiling to counteract cold operating conditions. Other features include a unit-to-ground filler spout, roof vent cap and float indicator valves.

For other fluid containment, Peak offers acid tanks, whose specialty lining can handle hydrogen sulfide.