A dry bulk tank and a method of carrying a load and discharging a load therefrom. The dry bulk tank includes a tank assembly having a first wall that bounds and defines a first compartment for carrying a load therein and a second wall spaced outwardly from at least a portion of the first wall; wherein a second compartment is defined between the first wall and the second wall. The tank assembly includes an air piping system that is selectively actuated to place the first compartment and the second compartment under substantially similar or substantially equal air pressure. In one example the air piping system pumps air into the first compartment and the second compartment. In another example the air piping system evacuates air from the first and second compartments.

A hydrovac having a chassis, a mud tank and water tank assembly mounted on the chassis, a hydraulic lift assembly capable of raising the mud tank and water tank assembly through a dump angle, the mud tank having a floor. A belt drive is provided for a blower of the hydrovac, along with belt tensioning system.

A tank and a method of carrying a load and discharging a load therefrom. The tank includes a tank assembly having a first wall that bounds and defines a first compartment for carrying a load therein and a second wall spaced outwardly from at least a portion of the first wall; wherein a second compartment is defined between the first wall and the second wall. The tank assembly includes an air piping system that is selectively actuated to place the first compartment and the second compartment under substantially similar or substantially equal air pressure. In one example the air piping system pumps air into the first compartment and the second compartment. In another example the air piping system evacuates air from the first and second compartments.

A tank and a method of carrying a load and discharging a load therefrom. The tank includes a tank assembly having a first wall that bounds and defines a first compartment for carrying a load therein and a second wall spaced outwardly from at least a portion of the first wall; wherein a second compartment is defined between the first wall and the second wall. The tank assembly includes an air piping system that is selectively actuated to place the first compartment and the second compartment under substantially similar or substantially equal air pressure. In one example the air piping system pumps air into the first compartment and the second compartment. In another example the air piping system evacuates air from the first and second compartments.

A tank and a method of holding a load and discharging a load therefrom. The tank includes a first wall that bounds and defines a first compartment for holding a load therein and a second wall spaced outwardly from at least a portion of the first wall; wherein a second compartment is defined between the first wall and the second wall. The tank assembly includes an air piping system that is selectively actuated to place the first compartment and the second compartment under substantially similar or substantially equal air pressure. In one example the air piping system pumps air into the first compartment and the second compartment. In another example the air piping system evacuates air from the first and second compartments.

A tank and a method of holding a load and discharging a load therefrom. The tank includes a first wall that bounds and defines a first compartment for holding a load therein and a second wall spaced outwardly from at least a portion of the first wall; wherein a second compartment is defined between the first wall and the second wall. The tank assembly includes an air piping system that is selectively actuated to place the first compartment and the second compartment under substantially similar or substantially equal air pressure. In one example the air piping system pumps air into the first compartment and the second compartment. In another example the air piping system evacuates air from the first and second compartments.

A trailer configured to lower an overall center of gravity. The trailer comprises a tank, a wheel assembly, an upper body height and a trailer length. The tank comprises a cavity contained within a lower body, an upper body, a transitioning body, a front end and a rear end when the cavity within the trailer is filled with a liquid fluid, the liquid fluid is evenly distributed along the trailer length of the trailer since a diameter of the lower body, the upper body and the transitioning body are equal.

A trailer configured to lower an overall center of gravity. The trailer comprises a tank, a wheel assembly, an upper body height and a trailer length. The tank comprises a cavity contained within a lower body, an upper body, a transitioning body, a front end and a rear end when the cavity within the trailer is filled with a liquid fluid, the liquid fluid is evenly distributed along the trailer length of the trailer since a diameter of the lower body, the upper body and the transitioning body are equal.

A tank and a method of carrying a load and discharging a load therefrom. The tank includes a tank assembly having a first wall that bounds and defines a first compartment for carrying a load therein and a second wall spaced outwardly from at least a portion of the first wall; wherein a second compartment is defined between the first wall and the second wall. The tank assembly includes an air piping system that is selectively actuated to place the first compartment and the second compartment under a substantially similar or substantially equal air pressure. In one example the air piping system pumps air into the first compartment and the second compartment. In another example the air piping system evacuates air from the first and second compartments.

A tank and a method of carrying a load and discharging a load therefrom. The tank includes a tank assembly having a first wall that bounds and defines a first compartment for carrying a load therein and a second wall spaced outwardly from at least a portion of the first wall; wherein a second compartment is defined between the first wall and the second wall. The tank assembly includes an air piping system that is selectively actuated to place the first compartment and the second compartment under a substantially similar or substantially equal air pressure. In one example the air piping system pumps air into the first compartment and the second compartment. In another example the air piping system evacuates air from the first and second compartments.