The
casting tool designer must also design the mold so that air has easy
access out of the mold during pouring and will not be trapped in
isolated sections of the casting.
- On the valve body, two vent lines
are added to connect the lower actuator cup to the upper main
cylinder.
- This permits any trapped air in the
actuator cylinder to vent into the higher upper cylinder and out
the side runners during the metal pour.
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