How to Backwash a DE Pool Filter Instructions vary according to your filter type; it's best to consult the website of the filter manufacturer, if possible. This is how it is done with a DE filter: ...

Drain Valve Cap Compatible with Intex Pools 11456 & 11385 Sand Filter Drain Cap with O-Ring for Above Ground Pool, Drain Plug Cap for Sand Filter Pumps and Combo Replacement Parts,SF90110-1,SF60110-2 ...

Sand filters are commonly used for keeping your swimming pool’s water clean, but over time the pool filter sand can become dirty and contaminated, which affects how well the filter can function ...

Pool filters-sand, cartridge, or diatomaceous earth (DE)-are designed to capture contaminants to a specific micron level. For sand filters, pressure gauges signal when a backwash is needed.