Both the inner and outer tanks are constructed from steel throughout, with a 110% bund capacity in accordance with the PPG2 Pollution Prevention guidelines. The tanks feature a baffled design for improved stability, and also include a pressure relief valve, automatic one-way breather and a fully sealed magnetic drive tank contents gauge. Fuel delivery equipment and inlets/outlets to the inner tank are housed in a secure, anti-vandal lockable cabinet at the rear of the tank. The site tow bowsers are available with a wide range of high quality fuel dispensing equipment to meet your specific requirements. All models feature a tough steel chassis with heavy duty running gear, making these bowsers the toughest on the market.