Correct alignment of both halves of the assembly is critical to function.
It is optimal to install Ultimate Vent Blocks directly into the mold base whenever possible. Ultimate Vent Blocks should be inserted at least 4.50″ from the edge of the mold base. The inlet sides of both halves of the Ultimate Vent 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 Ultimate Vent Blocks when installed correctly. The parting line of the Ultimate Vent 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 half of the Vent Block assembly to ensure alignment between the stationary and ejector halves. If key pockets are not correctly machined to tolerance within the mold set, the keys may not hold and shift in either side could result in a shut off of the flow path for evacuation.
Water is provided to the Ultimate Vent Blocks using horizontal mounting holes. If water is used, the vertical holes will be used to retain the blocks.