A dispensing unit having a circulation system for circulating a fluid in the dispensing unit is provided. The circulation system comprises, a circulation circuit, and a mechanism configured to circulate the fluid in the circulation circuit. By circulating the fluid, the fluid is counteracted from crystallizing. A method for circulating a fluid in a dispensing unit is also provided.

A dispensing unit having a circulation system for circulating a fluid in the dispensing unit is provided. The circulation system comprises, a circulation circuit, and a mechanism configured to circulate the fluid in the circulation circuit. By circulating the fluid, the fluid is counteracted from crystallizing. A method for circulating a fluid in a dispensing unit is also provided.

A distribution station includes a container, a pump, first and second manifolds fluidly connected with the pump, reels, hoses, valves, fluid level sensors, and a controller. Each hose is connected with a different one of the reels. A portion of the reels are connected to be fed from the first manifold and another portion of the reels are connected to be fed from the second manifold. Each valve is situated between one of the first or second manifolds and a respective different one of the reels. Each fluid level sensor is associated with a different one of the hoses. The controller is configured to individually open and close the valves responsive to the fluid level sensors.

A distribution station includes a container, a pump, first and second manifolds fluidly connected with the pump, reels, hoses, valves, fluid level sensors, and a controller. Each hose is connected with a different one of the reels. A portion of the reels are connected to be fed from the first manifold and another portion of the reels are connected to be fed from the second manifold. Each valve is situated between one of the first or second manifolds and a respective different one of the reels. Each fluid level sensor is associated with a different one of the hoses. The controller is configured to individually open and close the valves responsive to the fluid level sensors.

A tanker truck offloading manifold method. The tanker truck offloading method includes detecting a tanker truck in at least one of a plurality of offloading stations, energizing a blower having an inlet duct coupled to a tank receiving fluid from the plurality of offloading stations, the blower to draw gasses from the tank when at least one tanker truck is offloading at least one of the plurality of offloading stations, de-energizing the blower when no tanker truck is offloading at any of the plurality of offloading stations, energizing a pump having an inlet coupled to the tank when the tank level is above a predetermined high level, and de-energizing the pump when the tank level is below a predetermined low level.

A tanker truck offloading manifold method. The tanker truck offloading method includes detecting a tanker truck in at least one of a plurality of offloading stations, energizing a blower having an inlet duct coupled to a tank receiving fluid from the plurality of offloading stations, the blower to draw gasses from the tank when at least one tanker truck is offloading at least one of the plurality of offloading stations, de-energizing the blower when no tanker truck is offloading at any of the plurality of offloading stations, energizing a pump having an inlet coupled to the tank when the tank level is above a predetermined high level, and de-energizing the pump when the tank level is below a predetermined low level.

A system includes a source, a detector, and a controller. The source is configured to emit electromagnetic energy toward two plies of film. A portion of the emitted electromagnetic energy is within a range of wavelengths. The detector is arranged to detect electromagnetic energy propagating away from the two plies of film. The detector detects electromagnetic energy within the range of wavelengths and generates signals indicative of intensity of detected electromagnetic energy. The controller controls operation of the foam-in-bag system based the signals from the detector. The film is transmissive of electromagnetic energy in the range of wavelengths. When dispensed between the two plies of film, one or both of foaming chemical precursors or foam formed from a reaction thereof is opaque to electromagnetic energy in the range of wavelengths.

A system includes a dispenser, first and second feed lines, and heating zones. The dispenser dispenses a first chemical precursor and a second chemical precursor. The first feed line permits flow of the first chemical precursor from a first source to the dispenser. The second feed line permits flow of the second chemical precursor from a second source to the dispenser. The heating zones are located along the first and second feed lines. The heating zones include a first heating zone located around a first portion of the first feed line and a second heating zone located around a first portion of the second feed line. The first heating zone and the second heating zone are independently controllable to independently control temperature around the first portion of the first feed line and temperature around the first portion of the second feed line.

A system for opening and closing a mixing manifold includes a drive motor, a cam plate, and a valving rod connector. The drive motor imparts movement in first and second directions. Movement imparted in the first direction causes the cam plate to move linearly in a third direction and movement imparted in the second direction causes the cam plate to move linearly in a fourth direction. Movement of the cam plate in the third direction causes the valving rod connector to move linearly in a fifth direction and movement of the cam plate in the fourth direction causes the valving rod connector to move linearly in a sixth direction. Movement of the valving rod connector in the fifth direction causes retraction of a valving rod of the mixing manifold and movement of the valving rod connector in the sixth direction causes extension of the valving rod.

A system holds a roll of film that includes a core and film wound around the core. The system includes a rod having an outer diameter that is smaller than an inner diameter of the core, a proximal wing located on the rod and configured to rotate about the rod, and a distal wing located on the rod and configured to rotate about the rod. Each of the proximal and distal wings includes contact surfaces configured to contact diametrically-opposed locations on a side of an inner surface of the core and non-contact surfaces that span between the contact surfaces of the wing. The non-contact surfaces of the wings do not contact the core if the core has a cylindrical shape. The distal wing is capable of rotating around the rod independently of the proximal wing.