The present invention relates to a valve particularly suitable for use in dispensing hot glue although it may be used for dispensing any fluid. The valve has a hollow discharge arm which turns the valve stem against a spring actuated piston. The valve stem has a flat surface thereon with a hole in the center of the flat surface so that as the valve body turns, the piston is unseated from the hole, allowing liquid to flow around the piston through the hole and out through the valve stem and the dispensing arm. Instrument Manifolds A single spring is used which serves both to keep the valve centered, i.e., normally closed, and also to press the piston against the flat valve stem sealing the discharge opening. The hollow elongated arm of the valve provides the passage for the fluid and also acts as the control mechanism for the valve.

The valve can be placed over the path of travel of a piece of cardboard or the like in a box making operation and as the board passes under the valve, it presses against the arm, allowing liquid to flow out through the opening depositing a line of glue on the board.Bellow Seal Valve As soon as the board passes beyond the valve arm, the valve stem automatically returns to the off position so that no glue is dispensed unless an article is under the discharge arm.

One of the particular features of the present invention is that it consists essentially of only two moving parts which are held together merely by the spring action and without the use of bolts or other forms of screws. Therefore, the valve is extremely simple to disassemble, clean and reassemble.Water Control valves Also, since there are only two moving parts, the valve is inespensive, long lasting and there is little to get out of order.

Various other features of the invention will be apparent from the detailed description which follows.

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2011-12-12

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