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The Apollo Valves 4A-4A4-4AM is a 3/4 inch brass dual check valve with atmospheric vent that serves to protect water supply lines from back-siphonage and backpressure. It is suitable for residential and commercial use where non-potable substances are present.
This valve is designed for effective backflow prevention and can be installed in both hot and cold water systems. The atmospheric vent offers added safety against water quality issues.
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