Pro-Grid™ Vertical Grid D.E. Filters provide superior water clarity, efficient flow and large cleaning capacity for pools and spas of all types and sizes. Constructed in high-strength PermaGlass XL™, Pro-Grid combines high-technology features and "service-ease" design for an unparalleled filtration value for both new pool and aftermarket installations.
___________________________________________  Diatomaceous Earth is a porous powder with microscopic openings, that, when magnified, look like tiny sponges. Clear water can pass through these openings, but particles, as small as one to three microns, are trapped during the first pass through the media. D.E. filters have internal elements that become coated with D.E. It is this 'filter cake' that strains dirt, dust, algae, and some forms of bacteria from the water.
Similiar to sand filters, when D.E. filters become dirty, they are cleaned either by backwashing, or regenerating and draining the clogged D.E. to the 'waste' line. To restore filtration, a fresh 'charge' of D.E. is added to the filter. For sparkling, clean pools; step up to Hayward D.E. filters.
Applications:
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In-ground pools.
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In-ground spas or in-ground pool/spa combinations.
Features:
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PermaGlass XL™ filter tanks made from durable glass reinforced copolymer to meet the demands of the toughest applications and environmental conditions, including in-floor cleaning systems.
▪ Self-Aligned tank top and bottom make access to servicing the grid elements fast and simple
 ▪ Heavy-duty, tamper-proof one piece flange clamp securely fastens tank top and bottom. Allows quick access to all internal components without disturbing piping or connections.
▪ High impact grid elements designed for up-flow filtration and top-down backwashing for maximum efficiency.
▪ Integral lift handles and uniform low-profile base make removal of grid nest fast and simple.
▪ Inlet diffuser elbow distributes flow of unfiltered water evenly to all filter elements and provides even distribution of D.E. to grids.
▪ Convenient valve and plumbing options allow for customized control.
▪ 2" full-flow internal piping and plumbing for less resistance to flow and maximum performance.
▪ New 72 ft * filter made of PermaGlass XL™ allows for both commercial and large residential applications and years of non-corrosive, trouble-free performance.
* Based on 2-GPM/ft.2 (maximum allowable NSF rating) How A Vertical Grid D.E. Filter Works
1. Automatic Air Relief purges any trapped air during filter operation. Screenless design eliminates clogging.
2. Integral Lift Handles and Uniform Low Profile Tank Base make removal of grid nest fast and simple.
3. High-Strength Filter Tank molded of PermaGlass XL™ provides extra durability for dependable, corrosion-free performance.
4. High Impact Grid Elements designed for up-flow filtration and top-down backwashing for maximum efficiency.
5. Heavy-Duty Tamper-Proof Bolted Center Flange Clamp securely fastens tank top and bottom together. Allows quick access to all internal components without disturbing piping or connections.
6. Union Locknuts make disassemble and reassemble of filter from piping fast and easy.
7. Norly® Bulkhead Fittings for extra strength and heat resistance.
8. Inlet- Diffuser Elbow distributes flow of incoming unfiltered water upward and evenly to all filter elements. Parabolic tank design provides for even distribution of D.E. to grids.
9. Full-Size 1.5" Integral Drain provides fast 100% clean out and easier flushing of tank.
10. Convenient Valve and Plumbing Options allow for customized control. 2" internal piping and plumbing for maximum flow performance. ___________________________________________ 
*Determined by pump size and piping system hydraulics; 2" piping is recommended for flow rates equal to or greater than 90 GPM (341 LPM). Hayward doesn’t recommend flow rates above 150 GPM.
▪ See Owners Manual
▪ See Specifications
▪ See Parts
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