{"product_id":"pro-series-18-sand-filter-with-valve","title":"Hayward Pro Series 18\" Sand Filter with Valve","description":"\u003cp\u003eThe Hayward Pro Series 18 inch sand filter comes complete with its top mount valve. It is carried under part number W3S180T and also appears in Hayward literature as S180T.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow a sand filter works\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWater enters the top of the tank and is pushed down through a bed of media. Dirt is trapped in the bed and clean water returns to the pool through the laterals at the bottom. When the pressure gauge climbs, you turn the valve to backwash and the flow reverses to flush the trapped dirt out to waste. That is the whole routine, which is why sand filters remain the low fuss choice for a lot of pools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTop mount valve\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe multiport valve mounts on top of the tank rather than on the side. It keeps the plumbing compact at the equipment pad and puts the filter, backwash, rinse and waste positions in easy reach on top of the unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSizing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEighteen inches is the smallest tank in the Pro Series family. Match filter size to your pump so the filter is not undersized for the flow it will see.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48626226790612,"sku":"HAY-05-802","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_797516b3-f2db-4559-96f4-b9febdedd9ee.jpg?v=1788706573","url":"https:\/\/www.activepoolsupply.com\/products\/pro-series-18-sand-filter-with-valve","provider":"Active Pool Supply","version":"1.0","type":"link"}