... is easy to discharge the oil.3, Auto Air Exhaustion: there is an auto-air-exhaustion vent (3kPa threshold)located in the ... workers do not need to manually vent out the air in the tank.4, The unique coin drain port(option)at the ... (m²)Full High(m)Net Weight(kg)GFT-22,0003.4 x 1.70.40GFT2-55,0003.7 x 3.30 ... x 3.70.8559GFT2-1515,0006.4 x 3.70.8573GFT2-2020,0005.6 x 4.60.9081GFT2-3030,0006.9 x ...