Waterco Trimline Tank Lid (620251-0501) air switch The 21053-150-000 is a practical

The 21053-150-000 is a practical service part when a compatible plumbing system needs a union to restore dependable connection support

this component provides long-term reliability even in demanding environments

clear circulating water

Helps support quieter blower operation

Waterco Trimline Tank Lid (620251-0501) air switch The 21053-150-000 is a practicalThe Waterco Trimline tank lid is designed for compatible filter applications where the main vessel lid needs replacement. A tank lid is useful because it secures the top of the assembly while still allowing access for service, inspection, and internal maintenance when needed. This replacement is especially useful when the original lid is cracked, warped, damaged around the sealing surface, or no longer fitting properly after years of use. Replacing