Tieman 2005 aluminium 19 metre b double tanker set . Front tanker 20200 litres 3 compartments , manifold , air operated internal valves . B tanker 31700 litres 4 compartments , manifold , air operated internal valves . Covered hose trays , spill boxes , Safety rails , wind down legs , led lights , butterfly valves on all outlets , suit waste oil . Ex major company .