{"product_id":"pentair-semi-automatic-backwash-controller-for-04-tank-system","title":"Pentair Semi-Automatic Backwash Controller for 04 Tank System","description":"\u003ch2 data-path-to-node=\"0\"\u003ePentair Stark™ Manual Semi-Automatic Backwash Controller (4-Tank System)\u003c\/h2\u003e\n\u003cp data-path-to-node=\"1\"\u003eThe Pentair Stark™ Manual Semi-Automatic Backwash Controller (Model CM200-04) is a rugged, highly dependable fluid-distribution control hub engineered specifically to manage the sequential backwashing of multi-vessel commercial sand filtration arrays containing up to four separate filter tanks. Designed to streamline the labor-intensive maintenance of large-scale commercial water parks, public swimming pools, and resort aquatic systems, this purely mechanical hydraulic programmer completely eliminates the need for complex electronics, digital displays, or field programming. Instead, an operator manually initiates the backwash sequence simply by turning a heavy-duty selector dial, which utilizes city water pressure or compressed air lines to sequentially actuate large, diaphragm-style face-piping backwash valves one tank at a time. This deliberate, single-tank progression ensures that the system's overall hydraulic pressure remains perfectly stable, effectively fluidizing individual sand beds to purge trapped organic material and debris while protecting main circulation pumps and heaters from sudden pressure drops or cavitation during the cycle. Built to endure the harsh, humid, and corrosive environments of commercial pump rooms, the controller is housed within a non-corrosive, weather-resistant NEMA-rated enclosure that seals the internal multi-port pressure distribution valve network away from moisture and airborne chemical vapors. The dry shipping weight of the Pentair Stark Semi-Automatic Controller for a 4-Tank System is approximately \u003cb data-path-to-node=\"1\" data-index-in-node=\"1566\"\u003e15 pounds\u003c\/b\u003e (with a boxed weight of roughly 25 to 26 pounds depending on packaged ancillary fittings), providing commercial operators with an exceptionally durable, compact, and fail-safe water management solution that functions flawlessly without software dependencies or electrical power.\u003c\/p\u003e\n\u003cp data-path-to-node=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53158148243567,"sku":"CM200-04","price":3089.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/KDI-05-1004_medium_5d69bfeb-d254-456f-98b8-fb334737e8da.jpg?v=1779810066","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-semi-automatic-backwash-controller-for-04-tank-system","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}