This Dekker Vacuum DuraVane rotary vane vacuum pump has a heavy duty construction bundled into a compact design. It can be ordered in stack mounted, base mounted, or tank mounted units. This pump's high tec vane material provides long vane life. The gas ballast valve is standard. It is low maintenance and has a low noise level. There is an internally mounted inlet check valve and a high efficiency exhaust filter that removes 99.9 percent of exhaust smoke. This pump has direct drive with a flange mounted motor. Its air cooled design is standard. The pump is simple to install.