High Mark is proud to offer AQUAPEX® tubing standard on all bulkheads now. AQUAPEX tubing is very durable and has a life expectancy of 100 years and is able to withstand harsh chemicals such as chlorine. It will not corrode, pit or scale like copper tubing. Also this tubing won't leak toxins into the water like copper. This tubing also allows us to use our new specially designed valve manifold to keep the clutter of the bulkheads to a minimum. AQUAPEX creates a noise-less system and dampens the sound of rushing water and eliminates water hammer problems. Best of all, AQUAPEX tubing comes with a 25-year limited warranty when installed by a Wirsbo-trained professional such as High Mark Manufacturing.