AMP-FIT mechanical tube fitting products are designed specifically for use on telephone air pressurization systems. They include complete lines of fittings for CA-3131 type feeder pipe, 3/8 (9.53) tubing, 5 and 10 port manifolds with pre-assembled "F" and shutoff valves at each port. Installation is made possible without the need for solvents or special cleaning procedures in a matter of seconds by use of a manually operated hand tool.