As water pressure changes, the volume of air in a bladder. pressure tank contracts and expands. Periodically, the amount. of air in the tank should be measured and the tank recharged if. the air is too low. Bladder pressure tanks do not provide any. useful water storage capacity.
Add Image. Exotic Materials are the strange and unusual elements produced by science, nature, or some strange alien force. Such materials could be alloys, isotopes, chemicals, and such.
Unusual Materials. Polymers and metals are the most common types of material used in Additive Manufacturing and can be used to produce moulds and functioning components. They are particularly efficient for low-volume manufacturing and minimise waste.