Once the system has been installed and allowed to cure properly the system shall be tested in accordance with applicable code requirements. When testing with water (hydrostatic testing), the system must be slowly filled with water and the air bled from the highest and furthest points in the system before test pressure is applied. Air must be removed from piping systems to prevent it from being locked in the system when pressure is applied. Failure to do so could be harmful to jobsite personnel should a failure occur. If a leak is found, the affected product must be cut out and discarded. A new section can be installed using couplings or other approved means.
 WARNING — THE USE OF COMPRESSED AIR OR GASES FOR PRESSURE TESTING IS NOT RECOMMENDED AND CAN RESULT IN SYSTEM DAMAGE, SERIOUS BODILY INJURY, OR EVEN DEATH.
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