Paramount 4 Port Module with O-Ring

Replacement 4 Port Module w/ O-Ring for Paramount Pool Products 4 Port Valve (Used for Paramount 9 Port Systems). Also known as 3+1 Module or Hydra 4 Module. Why does the new module look different than my old one and will it fit in my old water valve housing? Paramount is continuing to update its products and the module has under gone some changes that make it look very different from your old one. You will notice that the brass stem has been removed and that there are now fins on the pistons of the new modules. The increasing use of salt systems to treat pool water is the reason for this change. Salt can attack the brass in the old modules and greatly reduce the life of the module. The new design with all plastic piston shafts, solve this problem. The fins help stabilize the piston when open. This design will not hinder the new modules from fitting into any old style 1 ‚½ inch valve base or the current style 2 inch bases. A change has also been made to the gear train and an extra gear has been added. This gear is non functional on most modules. On a special two port module used to feed two other water valves (a two port 5 gear), the gear is placed on a different pin and allows the module to rotate at a much slower speed. Replacement 4 Port Module for PCC 2000, Pool Valet, PV3, Cyclean, Vanquish, and Vantage In-Floor Cleaning Systems. Part number 004-302-4406-00