Polaris Vac-Sweep 360 In-Line Back-up Valve | 9-100-1200 pool This WMS assembly is the

This WMS assembly is the most important feature of this cleaner it is basically the “Heart” of these pressure-side cleaners

This part is white and can be found near the backside of the cleaner directly behind the vacuum tube

This debris and suet can clog up the cleaner’s pressure line which would ultimately make the pressure cleaner insufficient

the cleaner would not be able to climb the walls or steps

Polaris Vac-Sweep 360 In-Line Back-up Valve | 9-100-1200 pool This WMS assembly is thePolaris 360 Backup Valve (9 100 1200) The in line Polaris 360 backup valve is a genuine OEM product. This replacement part is made by Polaris. This backup valve was designed to be the feature that backs the Polaris 360 pressure side cleaner out of any corners or edges along with the pool steps which would cause the cleaner to be hung up or impeded. Without it, the cleaner would be insufficient in its ability to suck and pull up dirt and debris off