Speck 72/Badu EcoMV Body O-Ring (2901441220) valveparts A part like this is

A part like this is useful because it restores the complete wet-side hydraulic assembly while preserving the original side discharge format

which supports both pump protection and easier routine cleaning

or is no longer communicating correctly with connected equipment

A properly selected O-ring helps support cleaner groove fill and contributes to more dependable sealing performance in extra-large circular applications

PA20 references

Speck 72/Badu EcoMV Body O-Ring (2901441220) valveparts A part like this isSpeck 72 Badu EcoMV Body O Ring is a replacement sealing component for the applications called out in the product name, giving repair work a clean way to address worn, flattened, cracked, or missing seals without replacing the larger assembly. O rings are small parts, but they are critical to keeping water, air, and pressure where they belong in pool and spa equipment. This item should be matched by model family, part number, size, and material notes