Hayward Suction Side Cleaner Vac Lock | W400BWHP SuperMax Pump Parts and Accessories would be to check this

would be to check this backup valve

This cleaner combines the cyclonic Scrubbing brushes that spin and scrub stuck on and fine debris with impressive wall climbing abilities and programmed navigation

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This hose kit is needed on larger pools or pools with special configurations that may require more hose to reach the entire pool

OEM tool ensures accurate testing results

Hayward Suction Side Cleaner Vac Lock | W400BWHP SuperMax Pump Parts and Accessories would be to check thisHayward Suction Side Cleaner Vac Lock The vac lock is a replacement part that was made by Hayward. The same high quality materials were used to manufacture the original factory part. Making this a genuine OEM product. This part was designed for these suction cleaners and is a threaded quick connect adapter that is meant to connect itself to the vac port or vacuum line on your pool wall (if your pool has one, otherwise you will be using the skimmer)