Polaris 3900 Sport Chain (39-126) IntelliFloXF PAA this housing is designed to

this housing is designed to withstand the rigors of pool environments

It also acts as a protective cover for the diaphragm chamber ensuring no outside influence can disrupt it during the cleaning process

The 5-9-2000 is the complete package for a New Valve

The Trax was also designed to be wider than the Trax on the older model Polaris pressure cleaners

Polaris 3900 Sport Chain (39-126) IntelliFloXF PAA this housing is designed toPolaris 3900 Sport Chain (39 126) This chain was designed to be a part of the drive train system which gives the cleaner the ability to move around the entirety of your pool's surface. Cleaning and sucking up dirt, debris, and other forms of mulch leaving behind a crystal clear looking pool. This is located on the wheel sprocket assembly. This assembly is powered by the gearbox which rotates and moves the chain along, dispersing the rotating motion