A portable brine tank assembly is removable from the bed of a truck and includes a brine tank have at least one fill port and one outlet port and legs extending downwardly from the brine tank. The legs are foldable for moving the portable brink tank assembly into and out of the bed of the truck. The brine tank also carries a spray assembly and an injector assembly. The injector assembly is formed from two pumping chambers powered by a central chamber housing having a rotating eccentric plate rotatingly attached to a pair of linearly moving rod assemblies that move pistons located in the pumping chambers.

A motorized transfer tank includes an electric motor and related control equipment to enable the transfer tank to propel itself into and out of the dump body of a transfer dump truck without the use of cranes or winches. The motorized transfer tank enables a transfer dump truck equipped for transporting solid payloads to carry liquid payloads safely and economically by loading and unloading the motorized transfer tank from the truck's dump body and/or a transfer trailer by operation of the electric motor and a battery included with the motorized transfer tank. When not being used to transport liquid payloads, the motorized transfer tank may be unloaded from the transfer dump truck and/or the transfer trailer onto a stationary tank stand, allowing the transfer trailer and dump truck to be used for transporting other payloads.

Apparatus and related methods relate to a trailer with interchangeable modules. In an illustrative embodiment, a trailer may be configured to be towed by a pickup truck with a bed. The trailer may, for example, include a chassis that is at least partially exposed. A drive module may, for example, be configured to generate rotary motion from an energy storage module. A plurality of interchangeable modules may, for example, be configured to selectively and releasably couple to the trailer via mount modules. The interchangeable modules may, for example, include a fluid transfer pump module configured to transfer fluid from an inflow conduit to a receptacle external to the trailer. A pressure vessel may, for example, be configured to transport hazardous gas. A flatbed deck may, for example, be configured to cover the chassis in at least the location of the pressure vessel. Various embodiments may advantageously provide seasonal adaptability.

A freight vehicle has a cargo space that is convertible for handling piece goods and is also suitable for hauling liquid bulk material. A conventional cargo space is equipped with a drop-down frame and flexible liquid enclosure that is stowed in the ceiling of the trailer while hauling a full load of palletized or piece goods materials that can be lowered to the floor for transporting liquid bulk loads. Generally, the long tubular (round and or oval in shape from an end view) can be fitted with a polyethylene film disposable liner. The disposable poly liner will ensure the liquid freight is free from contamination. This concept not only eliminates the need for a liquid tanker to be washed out between each load but also allows for the hauling of piece goods freight when the frame system is raised back to the ceiling.