Correct alignment of both halves of the assembly is critical to function.
It is optimal to install Valve-Less Vacuum Blocks directly into the mold base whenever possible. Valve-Less Vacuum Blocks should be inserted at least 4.50″ from the edge of the mold base. The inlet sides of both halves of the Valve-Less Vacuum Block must be flush to the die cavity insert and mate evenly with each other when in the closed condition. There should be approximately a .040″ mismatch in height between the stationary and ejector halves of the Valve-Less Vacuum Block when installed correctly. The parting line of the Valve-Less Vacuum Block halves should be positioned flush with, or .001″ – .002″ proud to the die cavity insert.
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Keys are provided in each block to ensure alignment between the stationary and ejector halves. If pockets are not correctly machined to tolerance, the key may not hold and shift in the block could result in a shut off of the flow path for evacuation.
Water is provided to the Valve-Less Vacuum Block using horizontal mounting holes. If water is used, the vertical holes will be used to retain the blocks.