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.
Some common insulator materials are glass, plastic, rubber, air, and wood. Most solid materials are classified as insulators because they offer very large resistance to the flow of electric current. A material used to resist the flow of heat is known as â Thermal insulationâ.