Hayward DEX2420F Bulkhead Fitting The Hayward DEX2420F is an OEM bulkhead fitting designed for select Hayward pool filter systems — including Pro-Grid vertical D.E. filters and older SwimClear cartridge units. It is used to connect plumbing to the filter tank reliably and maintain a watertight seal between the filter housing and the intake/return piping. Key Features OEM-grade bulkhead fitting — ensures correct fit and seal for compatible Hayward filters. Durable PVC/Noryl construction — chemical- and corrosion-resistant to withstand pool water exposure. Fits multiple filter series — including Pro-Grid models (DE2420, DE3620, DE4820, DE6020, DE7220) and older SwimClear cartridge filters. Compact design — allows secure plumbing penetration without bulky adaptors or modifications. Specifications Manufacturer: Hayward Part Number: DEX2420F Type: Bulkhead fitting for pool filters Compatible Filter Models: Pro-Grid DE series (DE2420, DE3620, DE4820, DE6020, DE7220) and earlier-generation SwimClear cartridge filters Material: Pool-rated PVC/Noryl or equivalent pool-safe plastic Application: Plumbing connection (inlet or outlet) for filter tanks — used to connect suction or return lines securely through the tank wall Quantity Needed: Typically two fittings per filter (depending on configuration and plumbing requirements) Why Use DEX2420F If your filter’s original bulkhead fittings are cracked, leaking, or corroded — replacing them with genuine Hayward DEX2420F fittings ensures a proper seal and consistent water flow. This helps maintain filter integrity, prevents leaks, and avoids the common issues associated with improper plumbing connections such as pressure loss or water bypass around the filter tank. Installation & Maintenance Notes Drain the filter and relieve all pressure before removing and replacing bulkhead fittings. Clean the tank wall and sealing surfaces thoroughly before installing the new fitting to ensure proper seal and alignment. Use appropriate pool-safe thread sealant or O-ring (if applicable) to prevent leaks. Tighten to manufacturer-specified torque without over-tightening to avoid cracking the fitting or tank shell. Inspect bulkhead fittings periodically — especially in older filters — for signs of stress, cracking, or leaks, especially after heavy use or winter shutdowns.
