Rola Chem 1-1/2" PVC Vertical Mount Flow Meter (570341V) aromatherapy A diffuser like this is

A diffuser like this is useful because it helps guide water from the impeller into the wet end more efficiently

The 19 inch circular design and FC-9910 reference give this part practical value because DE grids work best when the replacement matches the intended filter shape and size closely

and this Waterway impeller is especially practical when maintaining the original E-Series center discharge configuration matters

or is allowing unwanted reverse flow in the line

The Hayward fuel conversion kit is designed for compatible Universal heater applications where the system needs to be converted from liquid propane to natural gas

Rola Chem 1-1/2" PVC Vertical Mount Flow Meter (570341V) aromatherapy A diffuser like this isThe Rola Chem 1 1 2 inch PVC vertical mount flow meter is designed for compatible systems that use a vertical installation style and need a visible way to monitor flow conditions. Flow meters are useful because they let you verify actual movement through the system instead of relying on guesswork during operation or service. This replacement is especially useful when the original meter has become cloudy, inaccurate, cracked, or difficult to trust.