Kravion CX900G Locking Knob Kit for Hayward Star-Clear Cartridge Filters — Complete Seal Repair Kit with O-Rings & Pressure Gauge

The Kravion CX900G Locking Knob Kit replaces worn locking hardware on compatible Hayward Star-Clear filter heads to stop leaks and restore correct pressure readings.

If your pool cartridge filter shows signs of weeping, erratic pressure readings, or a knob that won’t turn or seat properly, a faulty locking knob assembly is often the culprit. The Kravion CX900G kit supplies the parts needed to rebuild the top of the filter head — from the locking knob and guide cone to O-rings, washers, a vent valve and pressure gauge — so the filter can seal and operate as intended.

How does this kit prevent common pool filter leaks?

The kit replaces the components that create the seal between the filter head and cartridge, eliminating gaps caused by cracked or loose hardware. Replacing degraded O-rings and aligning the guide cone restores a tight barrier and reduces air and water ingress that can affect pump performance.

• Includes CX900H O-ring and CX900F head O-ring for reliable sealing
• Guide cone (CX900D) centers the cartridge for an even compression
• Washers and E-clip ensure the locking assembly stays secured under pressure
• Pressure gauge helps identify high-pressure conditions that signal cleaning needs

Which Hayward models does the Kravion CX900G kit fit?

This kit is engineered to match Hayward Star-Clear Plus cartridge filters so you can replace the top hardware without guessing. It covers a broad range of popular model numbers — check your filter’s model plate to confirm compatibility before ordering.

• Compatible with C751, C7512, C900, C9002(S)
• Fits larger models including C1200, C12002(S), C1502, C17502(S), C2002
• If uncertain, compare parts or contact support with your model number

What parts are included and how do they improve operation?

The kit is supplied as an all-in-one repair pack so you get every element that commonly fails on the filter head. Fresh seals, a vent valve, and a working gauge help maintain stable pressure, reduce air leaks, and provide a clear signal when the cartridge needs cleaning.

• CX900G locking knob for secure closure and easy turn action
• CX900D guide cone to align the cartridge and prevent mis-seating
• CX900H and CX900F O-rings for renewed compression and leak prevention
• ECX1322A directional vent valve and pressure gauge for monitoring and safe venting

How difficult is installation and what tools are required?

Installation is designed for DIY-friendly replacement with minimal tools and no specialized service calls. The kit’s guide cone and hardware simplify alignment so most homeowners can complete the swap quickly and confidently.

• No power tools necessary — common hand tools suffice
• Step-by-step alignment via the included guide cone minimizes rework
• Replacing the knob and seals typically takes under an hour for experienced users

Who is this for: The Kravion CX900G Locking Knob Kit is aimed at pool owners and maintenance pros who own a Hayward Star-Clear Plus cartridge filter and need a reliable, corrosion-resistant repair solution. It’s especially useful for anyone noticing leaks, fluctuating pressure readings, or a stiff or broken locking knob who wants a complete parts set to restore proper sealing and circulation without replacing the entire filter head.