Hayward SX200K Top Dome - For S200T

What This Part Is Used For
The Hayward SX200K is a top dome specified for the Hayward S200T sand filter. It closes off the top opening of the filter tank and supports the top assembly area during operation. This part sits at the top of the filter on the equipment pad.

Why This Part Matters
If the top dome is cracked or not sealing, the filter can leak under pressure and make routine operation and backwashing messy. A poor top seal can also introduce air depending on the plumbing setup and how the system primes. Replacing the correct dome restores a tight closure so the filter holds pressure properly. This is a common repair after freeze damage or repeated service openings.

Key Features and Specifications

• Manufacturer part number: SX200K
• Sand filter top dome
• Specified for Hayward S200T sand filter
• Closes and seals the top opening of the filter tank
• Replacement part for cracked or leaking top closures

Installation and Fitment Guidance
Turn off the pump and fully relieve filter pressure before removing the dome or clamp components. Inspect and replace the correct O-ring if it shows flattening or damage so the dome seals evenly. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward builds a complete residential pool equipment ecosystem including pumps, filters, heaters, automation, cleaners, chlorination systems, and service parts. Their sand filters are widely installed and supported with serviceable top components and seals for long term maintenance. This compatibility helps technicians rebuild filters instead of replacing complete units. Hayward replacement parts are widely supported across the pool industry.

Common Service Context
Techs typically replace top domes when they see leaks at the top closure under pressure or cracks around the sealing surface. It is often discovered during sand changes or when a filter will not stop dripping after reassembly.