These nipples are threaded pipe fittings in schedule 80 PVC (polyvinyl chloride). Schedule 80 risers are threaded on both ends. Schedule 80 risers are a very common component in most lawn sprinkler irrigation systems. Schedule 80 is also NSF listed, has a 140 degrees Fahrenheit working temperature.
WARNING: The following product(s) can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov
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