The TXA Series bladder style tanks boast many advantages over other style thermal expansion tanks. The bladder can be easily replaced in the field. The free standing models have a system connection at the bottom of the tank. This is subtle but important difference from the top connection type of tank offered by some manufactures. The TXA tank is designed to prevent any harmful build-up of dirt, grit or system contaminants in addition to providing for easy draining to assist in establishing proper air charge.