Waterco Baker Hydro HRV Keyed Bulkhead Fitting (31B9032) is a replacement service part for compatible pool, spa, or bath equipment. It is intended for repairs where the original component is worn, damaged, missing, or no longer performing as expected. Part number 31B9032 should be matched by model, size, part number, and application before purchase.This Waterco USA component helps support a proper equipment repair without replacing more of the system than necessary. Comparing the existing part, installation location, and surrounding components can help confirm compatibility and reduce the chance of ordering the wrong replacement.For best results, inspect related seals, fasteners, fittings, wiring, or wear items before completing the repair. A careful match helps restore system performance and protects surrounding equipment. Replacement service part for compatible pool, spa, or bath equipment Confirm part number, size, and application before ordering Useful for targeted repair and maintenance work Inspect surrounding components during installation Helps restore reliable equipment operation when properly matched