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.
Viscose material is softer than cotton and more springy than silk. Viscose is comfortable to wear. Natural and artificial fibers; Natural fibers are cotton, wool and silk and artificial are synthesized with petrochemicals like nylon and polyester.iscose material is softer than cotton and more springy than silk. Viscose is comfortable to wear. Natural and artificial fibers; Natural fibers are cotton, wool and silk and artificial are synthesized with petrochemicals like nylon and polyester.