OEM Waterway Pressure Relief Screw with O-Ring 550-4240 is an essential maintenance part for Waterway Crystal Water Cartridge and DE filters, designed to safely release internal pressure and protect the filtration system. It includes both a threaded screw and sealing O-ring, providing a reliable fit for Waterway plastic filters. This part supports long-term system health by preventing overpressure conditions and ensuring leak-free performance during operation.

• Protects Filter Integrity: Regulates internal pressure levels to protect components and ensure smooth system function.

• Fits Crystal Water Models: Made for Waterway Crystal Water DE and Cartridge filters with plastic housings.

• Complete Two-Piece Kit: Includes both the pressure screw and sealing O-ring for immediate use and installation.

• Maintains Safety and Flow: Prevents over-pressurization while maintaining proper flow and water clarity in the system.

• Designed for Pool Use: Durable, chemical-resistant materials suited to pool water conditions and ongoing maintenance.

• (1)ÊWaterway Pressure Relief Screw
• (1)ÊO-Ring

• Waterway Crystal Water DE Filers
• Waterway Crystal Water DE Filers

Pressure Relief Kit for Filters

550-4240 pressure screw with o-ring in-store

buy relief valve screw for crystal water filters

in-store safety part for waterway plastic filters

pressure release fitting for de cartridge filters

screw and o-ring kit for pool filter housing

Filter Pressure and Leak Prevention

high pressure fix with relief screw replacement

prevent filter damage with pressure release part

in-store part to stop filter housing leaks

screw kit to relieve air in pool filter tank

replace pressure valve o-ring and screw

Fitment and Compatibility

fits all waterway crystal water plastic filters

compatible with de and cartridge filter models

pressure screw for waterway housing 550-4240

oem relief screw fits standard waterway systems

part includes screw and o-ring for complete seal