Waterway 2.5" Split Nut for DE Pool Filters — Part 400-5271B

The Waterway 400-5271B 2.5-Inch Split Nut is a premium OEM replacement part purpose-built for fastening plumbing joints on Waterway DE filter assemblies. Crafted from robust, pool-rated PVC, this component is engineered to deliver watertight connections even when subjected to chemically treated water and elevated system pressures. Found as a standard element in numerous Waterway DE filter setups, it features a straightforward installation process that makes...

Waterway Crystal Water 48 Sq. Ft. DE Filter Element Cluster - Part 550-4120

Bring your pool filtration back to peak condition with the OEM Waterway Crystal Water DE Filter Element Cluster | 48 Sq. Ft. | 550-4120. This fully assembled replacement grid cluster is purpose-built for Waterway Crystal Water DE filters including model 570-0048-07, offering 48 square feet of high-performance synthetic filtration media that captures even the finest suspended particles and contaminants. Every component arrives ready to install:...

415-5090 Waterway 2" Self-Aligning Union Nut Replacement

The Waterway 415-5090 Union Nut is a factory-original 2-inch self-aligning union nut engineered for reliable connections within pool and spa plumbing networks. This sturdy replacement part preserves a solid seal on union assemblies paired with pool pumps, filters, heaters, and related circulation equipment. Thanks to its self-aligning geometry, this nut accommodates minor pipe alignment variations during assembly, streamlining the connection process even when plumbing runs...

Waterway High-Temp PVC Slide Valve Assembly 2.5" | 600-1500

The Waterway 600-1500 OEM Swimming Pool Filter Backwash Valve is constructed from high-temperature CPVC and equipped with 2-1/2 inch ports plus included 2-inch reducer fittings, making it a direct-fit solution for backwashing Crystal Water DE filter systems. Precision-engineered to work with filter models 570-0036-07, 570-0048-07, and 570-0060-07, this slide valve assembly locks in securely and performs reliably through countless backwash cycles in demanding poolside conditions....

Waterway Crystal DE Filter Grid Support 20" 36 sq. ft. | 550-4380

The OEM Waterway DE Grid Support Assembly 550-4380 is a key internal structural component engineered for the 36 sq ft Waterway Crystal Water DE Filter. Equipped with a 20-inch PVC shaft, this assembly holds the filter grids in proper alignment and facilitates the even coating of diatomaceous earth powder across all grid surfaces. Its rugged design handles sustained water pressure and continuous chemical exposure, delivering...

Waterway 1.5" Top Mount Multiport Valve for Sand Filters | WVS003

The Waterway WVS003 Top Mount Multiport Valve gives you complete command over your sand filter's operation from a single, well-built valve assembly. Specifically engineered for Carefree and TWM sand filters, this 1.5" valve integrates smoothly with standard pool plumbing configurations. Its multi-position handle lets you switch between essential filtration modes with ease, while the rugged construction stands up to constant water pressure and chemical exposure....

Waterway Crystal Water Filter Air Relief Assembly | 550-4320

The OEM Waterway Air Relief Assembly 550-4320 is an essential service part for Waterway Crystal Water DE Filters, purpose-built to purge trapped air and preserve consistent system operation. When air accumulates inside the filter housing, this assembly releases it to restore proper water circulation and keep filtration running at maximum efficiency. Made from quality materials selected for their resistance to pool chemicals and operating pressures,...

Waterway Crystal Water HD Pressure Relief Valve | 550-6730

The OEM Waterway Pressure Relief Valve Assembly with Gauge 550-6730 is built for Crystal Water Cartridge Filters, providing controlled pressure regulation and live system monitoring in a single unit. The integrated pressure gauge gives pool owners instant visibility into filter conditions, making it simple to identify when maintenance is needed or when pressure has climbed to levels that require relief. Constructed from durable, pool-rated materials,...

Waterway Crystal Water Filter Metal Clamp New Version | 550-6300B

The OEM Waterway Metal Clamp 550-6300B is a heavy-duty, multi-segment fastening assembly that provides a rock-solid seal for Waterway Crystal Water DE and Cartridge filters. This updated version supersedes the previous part numbers 550-4780 and 550-4260, featuring enhanced durability and improved clamping force for demanding high-pressure filtration applications. Shipped with a locking nut and bolt, this assembly delivers everything needed for a complete, secure installation...

Waterway Crystal Water Filter Pressure Relief Screw With O-Ring - Part 550-4240

The OEM Waterway Pressure Relief Screw with O-Ring 550-4240 is a critical safety component for Waterway Crystal Water Cartridge and DE filters. This two-piece kit allows controlled venting of excess internal pressure, safeguarding your filtration housing and internal parts from potential damage. Supplied with a precision-threaded screw and a matching sealing O-ring, it delivers a snug, drip-free fit on Waterway plastic filter bodies. Keeping this...

Waterway Crystal Water DE Filter Manifold Nut | 718-4320

The genuine Waterway Manifold Nut 718-4320 is a factory-spec fastener purpose-built to anchor the manifold assembly inside your Waterway Crystal Water DE filter tank. Fabricated from resilient materials and machined to tight tolerances, this nut delivers a firm, reliable hold that keeps internal components properly positioned during operation. It plays a vital role in sustaining pressure equilibrium and structural alignment, contributing directly to the smooth...

Waterway Filter Tank O-Ring for Crystal Water Filters | 805-0000

The Waterway 805-0000 Filter Tank O-Ring serves as a vital gasket for Waterway Crystal Water Cartridge and DE filtration units, engineered to deliver a secure, drip-free seal at the tank junction. Constructed from robust, chemically resilient elastomer, this O-ring holds up under the operational demands of pool filtration while preserving peak system performance. With broad compatibility across several Crystal Water filter models, it is indispensable...

Waterway Crystal Water DE Filter Top Manifold With Air Relief - Part 550-4200

The OEM Waterway Top Manifold with Air Relief 550-4200 serves as an indispensable part of Waterway Crystal Water DE filtration systems. Equipped with a built-in air relief valve, this manifold vents accumulated air from the filter housing, promoting uninterrupted water circulation and maximizing filtration effectiveness. Fabricated from robust, pool-grade materials and compatible across multiple Crystal Water DE models, it keeps your system running at peak...

Waterway Crystal Water DE Long Elbow Fitting 2.5" | 550-4410

The OEM Waterway Long Elbow Fitting 550-4410 is a 2.5-inch directional plumbing component specifically shaped to channel water flow within Waterway Crystal Water DE filtration systems. By routing water along the correct internal path, this elbow fitting promotes efficient circulation and contributes to consistent filtration output. Built from heavy-duty materials that tolerate ongoing pressure loads and chemical exposure, it forms a dependable connection point that...

Waterway 2.5" Bulkhead Fitting for Crystal Water Filters — Part 419-4201

The Waterway Bulkhead Fitting 419-4201 is a 2.5-inch threaded connector specifically crafted for Waterway Crystal Water Cartridge and DE filtration systems. This fitting secures a solid, drip-free bond between filter components, promoting reliable water circulation and protecting the overall integrity of your filtration setup. Built from heavy-duty materials that resist wear and chemical attack, it upholds peak filter efficiency across rigorous pool operating conditions and...

Waterway Crystal Water 525 Cartridge Filter Tank Lid | 550-4480

The OEM Waterway Tank Lid 550-4480 delivers a secure, pressure-tight closure for Waterway Crystal Water 525 square foot cartridge filter systems. Molded from rugged, weather-resistant materials, this lid is built to handle continuous system pressure and withstand outdoor exposure year-round. Its exact-fit design allows for a quick, straightforward replacement that restores a proper seal, helping your filtration system maintain steady performance and keeping your pool...

Waterway Crystal Water Filter Clamp Wrench | Part 519-4351

Service your Crystal Water filter clamps with confidence using the genuine Waterway 519-4351 (also referenced as 519-4350) Clamp Wrench. This purpose-built tool is specifically designed to tighten and loosen the clamp bands on Waterway Crystal Water Cartridge and D.E. Filters, ensuring a secure, leak-free closure every time. Its ergonomic handle provides a comfortable, non-slip grip that reduces hand fatigue during extended maintenance work. Made from...

Waterway Top Manifold for Crystal Water Cartridge Filters — Part 519-4320

Restore uniform water distribution in your Crystal Water filter with the genuine Waterway 519-4320 Top Manifold. This factory-original internal component channels incoming water evenly across every cartridge element, ensuring each one captures its share of contaminants for maximum filtration efficiency. Without a properly functioning manifold, water can bypass cartridges unevenly, leading to cloudy water and premature cartridge fouling. Molded from robust, pool-rated material, this manifold...

Waterway Crystal Water Cartridge Filter Manifold Assembly - Part 550-4300

The OEM Waterway Manifold Assembly 550-4300 is engineered to deliver balanced water distribution throughout the cartridge elements in Waterway Crystal Water filtration systems. Fitting the 325, 425, and 525 square foot models, this manifold is instrumental in maximizing filtration throughput and prolonging the operational life of your filter components. Crafted from tough, pool-rated materials that resist degradation from chemical treatments and continuous use, it ensures...

Waterway Crystal Water Filter Bulkhead Fitting - Part 550-4270

The OEM Waterway Bulkhead Fitting 550-4270 delivers a leak-proof junction point for Waterway Crystal Water Cartridge and D.E. filters, maintaining stable water flow and consistent system pressure. Manufactured from high-strength, chemically resistant materials, this fitting stands up to the demanding conditions found in pool equipment environments. By ensuring a secure, watertight connection at critical plumbing points, it plays a central role in preserving filtration performance...