Hayward DIFFUSOR HYDRODOM 2IN

The Hayward Diffusor Hydrodome 2 in (Open Line) is an internal part for a sand‑ or cartridge‑type pool/spa filter or filtration system made by Hayward. Its role is to act as a water diffuser: when water enters the filter tank it distributes the inflow evenly over the surface of the filter media (sand or cartridges). This helps ensure that water flows uniformly through the media instead of channeling — which enhances filtration efficiency and maximizes use of the full filter bed. The diffuser is molded from corrosion‑resistant, pool‑compatible materials, making it durable under exposure to pool chemicals, water and typical operating pressures. In systems with this diffuser, you get more consistent filtration performance, more evenly distributed flow, and potentially longer filter cycles compared with a setup without a proper diffuser.