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.
What are flammable materials. Flammable materials are substances that can ignite easily and burn. rapidly. They can be common materials that are at most work sites in. gas, liquid and solid forms. Some examples of flammable materials. include: Gases â Natural gas, propane, butane, methane, acetylene, carbon. monoxide, hydrogen sulphide.