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 part in good condition is fundamental to safe system operation and sustained filtration efficiency over time.

Key Benefits

• Safeguards Filter Components: Controls pressure buildup inside the filter housing, protecting internal elements and ensuring uninterrupted operation.
• Crystal Water Filter Compatible: Engineered specifically for Waterway Crystal Water DE and Cartridge filters equipped with plastic housings.
• Ready-to-Install Two-Piece Kit: Comes with both the pressure relief screw and a sealing O-ring so you can replace the part and get back to swimming immediately.
• Ensures Safe Water Flow: Guards against dangerous overpressure situations while preserving steady circulation and water purity.
• Pool-Tough Materials: Constructed from chemical-resistant compounds that endure repeated exposure to treated pool water and environmental elements.

What's Included

• Waterway Pressure Relief Screw
• O-Ring

Compatibility

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

Specifications

• Brand: Waterway
• Part Number: 550-4240

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