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Swap Valve
U.S. Patent No. 6,471,503

SMARTFLOW® SWAP® Valve

The SMARTFLOW® SWAP® Valve is a simple, manually selectable device that supplies cooling water to the mold during processing or air to purge the water from the mold, cooling lines, Supply and Return manifolds prior to tool change.

The 3-position shear valve is a proven design. The valve selector handle has three positions: WATER, PURGE and VENT. An included check valve should be installed in the return line downstream from the Return manifold to prevent backflow to the mold.

Tubing may be connected to the manual vent-drain port so any residual water after the purge cycle can be drained into a suitable container or floor drain.

An optional spring-loaded, locking mechanism on the valve selector assembly is available for molders who require additional protection from accidental valve movement.

Application: The SWAP Valve is well-suited for cooling water Supply lines up to 2-inch NPT on frequently changed tools that are hung on small to medium tonnage injection molding machines. It is permissible to adapt 3/4, 1-1/4, 1-1/2 and 2-inch line sizes providing adequate cooling water flow can be achieved. Typical mounting is on the press frame or the safety door frame. Mounting on any suitable surface, such as a platen, mold or manifold stand is acceptable.

Closed Loop Water Systems
Closed Loop DiagramAn air separator, installed per the diagram on right, will remove air from the water before it reaches the temperature control unit. If temperature control units are not used, an air separator may be installed at the highest point in the return cooling water loop to remove air from the system. Click here for Air Separator information.

Molder Benefits

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Click to download the Swap Valve instructions