Pentair 178616 Compression Spring for Clean & Clear / Quad – Clean And Clear Plus 520 Cartridge Filter

Pentair Compression Spring for Clean & Clear / Quad | 178616

OEM compression spring for Pentair Clean & Clear Plus & Quad D.E. filters. Restores proper manifold tension. SKU 178616.

Features

• Genuine Pentair spring designed for manifold pressure control
• Fits EasyClean, Clean & Clear Plus (post-11/98), and Quad D.E. filters
• Maintains even cartridge compression to prevent bypass
• Built of corrosion-resistant alloy for pool environments
• Simple drop-in replacement with no tool modifications
• Helps prevent filter inefficiency and extended wear

Description

The Pentair 178616 Compression Spring is a small but essential component that ensures your filter manifold applies even pressure across cartridges. It’s engineered for ease-of-use: simply drop it into the central post of your manifold during rebuild or maintenance. Because the spring is properly tensioned, it helps the filter maintain consistent flow and avoids cartridge shifting or bypass. No adjustments or calibration required beyond standard reassembly.

Pro Tip

Inspect the spring end-caps for wear when replacing. Pair with a new manifold O-ring or manifold bolt for a complete rebuild. Many users replace the spring when re-sealing the tank.

Installation Tips

Ensure pump is off and system depressurized before opening the filter. Position the spring concentrically in the manifold tube; avoid bending. Confirm cartridge tops are seated before reassembling tank. Always use new O-rings or lubricated seals when reassembling.