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.
1The matter from which a thing is or can be made. âgoats can eat more or less any plant materialâ. count noun âhighly flammable materialsâ. âThis sculpture was room size and not made of any fine material like marble or wood.â. âThe sediment is cemented by material derived from pore waters and grain dissolution.â. âFor the first three harvests, plant material was bulked across three gullies to obtain sufficient plant material for mineral analyses.â.