A tank and a method of carrying a load and discharging a load therefrom. The tank includes a tank 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 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.

In accordance with at least one aspect of this disclosure, a retractable hose reel system includes a reel configured to rotate about a shaft, a fluid driven motor configured to drive the reel, a fluid connector configured to connect to a fluid source to power the fluid motor, and a fluid line connecting between the fluid connector and the fluid motor to supply fluid from the fluid source to the fluid motor to power the fluid motor. A valve is disposed in the fluid line, configured to move between an open position and a closed position, where in the open position the valve allows fluid flow to the fluid motor and in the closed position the valve prevents fluid flow to the fluid motor.

A reel handler system includes a first arm and a second arm. A first member is coupled to the first arm and a second member is coupled to the second arm. A sleeve has the members movably positioned therein. A first bracket has a first link coupled to the first arm and a second link coupled to the sleeve. The links are pivotable relative to one another. A second bracket has a third link coupled to the second arm and a fourth link coupled to the sleeve. The third and fourth links are pivotable relative to one another. The brackets are movable to increase and decrease a distance between the arms from a first configuration in which the first and third links are spaced a first distance apart from the sleeve and a second configuration in which the first and third links are spaced a second distance apart from the sleeve.

A fluid transport system, comprising: a first container; a second container; a coupler coupled between the first container and the second container, the coupler including: a body portion, the body portion defining an aperture configured for fluid flow through an interior of the body portion; a flange and one or more indicator objects sealed within the body portion of the coupler, the flange has means for containing the indicator objects; wherein the fluid transport system is configured to permit fluid flow from the first container through the coupler to the second container; and wherein the indicator objects make a noise, when the fluid flows through the means for containing the indicator objects, thereby providing audio notification to a user that the fluid is flowing from the first container through the flange sealed within the body portion of the coupler to the second container. A Liquid Flow Indicator Device and a method of using the device.

A Liquid Flow Indicator Device comprising: a sight glass having one or more cages positioned around the sight glass for containing one or more indicator objects, so a user can see the indicator objects, which are visible to the user looking through the sight glass, thereby providing visual notification to the user. When the liquid is flowing through the cages and also the sight glass, the indicator objects will float around inside the cage, thereby providing visual notification to the user that the liquid is flowing through the cage and the sight glass. The indicator objects can also make a sound when the liquid flows through the sight glass and through the cage by banging around inside the cage, thereby providing audio notification to the user that the liquid is flowing through the sight glass. As such, this invention provides Audio notifications and/or Visual notifications regarding the flow of liquid. A fluid transport system and a method of using the device.

A vehicle with a carpet cleaning system comprises a plurality of operational units mounted within the vehicle, including a blower pump unit, a vacuum recovery tank unit, a reel and tank unit, and an auxiliary tank unit. The operational units are mounted on a stainless steel mounting frame that defines zones for mounting each of the operational units. The mounting frame having attachment points that align each of the respective operational units which facilitates the initial assembly of the unit. The mounting frame is secured to the floor through a minimal number of opening extending through the floor. The operational units are secured with a multiplicity of threaded connectors to the frame. The separation of the individual operational units from direct attachment to the floor dramatically reduces corrosion of the vehicle and equipment, facilitates the initial assembly and minimizes maintenance and repairs.

Fuel delivery systems, such as those incorporated in propane trucks or other fuel delivery trucks, are provided for loading, transport and offloading of fuel and/or other deliverables. In some embodiments, a fuel transfer reel is supported forward of an engine compartment. In some embodiments, a fuel transfer reel is supported between an engine compartment and a fuel vessel.

An apparatus for dewatering sludge comprises a tank having an internal space divided by a dividing wall into an intake chamber and an extract chamber, an intake pipe connected to the intake chamber by an intake valve, a discharge pipe connected to the extract chamber by a discharge valve, and a transfer pipe providing fluid communication between the intake chamber and the extract chamber. The transfer pipe has first opening near the bottom of the intake chamber, and a second opening near the top of the extract chamber. A pump selectively creates positive and negative pressure within the intake chamber. A screen is positioned within the extract chamber between the second opening of the transfer pipe and the discharge pipe. 15

A vehicle, method and system for removing waste material from a worksite is provided. An example of a vehicle includes a containment tank, a vacuum inlet pipe, a reagent tank, an injection point, and a deliver system to deliver the liquid-phase reagent to injection point. An example method includes drawing the waste material using a vacuum inlet pipe, delivering the liquid-phase reagent to the waste material, adding the liquid-phase reagent to the waste material and delivering the waste material to a containment tank. An example system includes a reagent tank and a delivery system to deliver the liquid-phase reagent to the liquid-phase reagent via a connector.