Hayward DE3620 Pro-Grid Vertical D.E. Filter, 36 Sq. Ft.

SKU: 726674
Brand: Hayward Model: DE3620 Condition: New

Hayward DE3620 DE Pool Filters

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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 with high-strength reinforced thermoplastic, Pro-Grid combines high-technology features and "service-ease" design for an unparalleled filtration value for both new pool and aftermarket installations.

How A Vertical Grid D.E. Filter Works

Uniform Low Profile Tank Base make removal of grid nest fast and simple. High-Strength Filter Tank molded of reinforced thermoplastic provides extra durability for dependable, corrosion-free performance. Glass-filled polymer Bulkhead Fittings for extra strength and heat resistance. High Impact Grid Elements designed for up-flow filtration and top-down backwashing for maximum efficiency. 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. Union Locknuts make disassemble and reassemble of filter from piping fast and easy. 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. Full-Size 1.5" Integral Drain provides fast, 100% clean out and easier flushing of tank. Convenient Valve and Plumbing Options allow for customized control. 2" internal piping and plumbing for maximum flow performance.

See below to read the differences between D.E. and Cartridge filters.

D.E. vs Cartridge FiltersDE is always a much better filter; it will filter about 10 times finer particles than cartridge will. Cartridge filters need to be cleaned every few months, whereas DE filters can usually go month or two longer for similar sized filters. Backwashing is not recommended, but you want to you can. If a DE filter is properly sized (48 or 60 sq ft for most residential pools) they will usually only need to be cleaned 2 times a year. Without the help of cellulose, a cartridge filter will have a very difficult time filtering out algae (should the pool get it which all pools do),when you add one of these products it's basically like putting DE in a cartridge filter. Your other option is to add a flocculent, which will clump the particles so they are bigger and the cartridge will filter them out, with a flocculent you are making the particle bigger and with cellulose you are adding an additive to allow the filter to filter out finer particles. The only advantages to cartridge are that they are slightly more customer friendly and slightly easier to clean, mostly because you don't have to add DE when you are done cleaning it. The assembly (putting the filter back together) is also a little bit easier. This should not influence anyone's decision as to which one is better, and should be purchased. A lot of builders use cartridge filters because many cities require them, or they don't allow DE on new construction. The reason for that is that DE is not good for the environment. Almost 100% of the filters purchased by the service trade are DE, because they work MUCH better. Also, the life expectancy of a grid (DE) is about 10 years if they are taken care of (backwashing will decrease the life expectancy because it stretches the cloth on the grid), a cartridge is only expected to last 3-5 years. Replacement cartridges also cost about double what a new set of grids would.

Basic Pool & Spa Combination Plumbing Diagram

Features:APPLICATIONS: In-ground Pools, In-ground Spas or In ground Pool/Spa Combinations
• Reinforced thermoplastic Filter Tanks constructed 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 1-piece flange clamp securely fastens tank top and bottom, allowing for 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
• 72 ft. Filter made of reinforced thermoplastic allows for both commercial and large residential applications and years of non-corrosive, trouble-free performance
• New High capacity, rapid release Manual Air relief Valve bleeds air with a quick quarter turn of the Lever
• Convenient Valve and plumbing options allow for customized control
• 2" Full-flow internal Piping and Plumbing for less resistance to flow and maximum performance
Specifications:• D.E. Required: 4-1/2 lbs.
Performance Data
• Effective Filtration Area: 36 ft.2
• Design Flow Rate: 72 GPM (Based on 2 GPM/ft.2, Max. allowable NSF rating)
• Turnover Capacity (In Gallons): 8 Hours: 34,560 / 10 Hours: 43,200

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Questions & Answers

I have an inground pool of approximately 28,000 gallons and a Hayward Super Pump 1.5-HP model SP2610X1523. I want to be sure I buy the right DE filter and multiport valve for my pump and pool. Hayward recommended either the DE3620 or DE4820. Which one is right? Also, is the Hayward SP0710XR50 the right valve? My pool guy said the multiport valve should be 1.5 inches.

by Erik E. on 05-13-2012

You can use either of those filters and they will not be overpowered by the pump. The difference between them is the DE4820 is a larger filter which allows you to go longer between filter cleanings.

You can use the SP0710XR50 valve or the SP0410X502S, the difference being the SP0410X502S is a slide valve and is only a 2-position valve and the SP0710XR50 is a 6-position valve. The different valve positions are different functions.

on 05-16-2012
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