Waterway Crystal Water Air Relief Assembly with Tube [325 sq. ft.] (550-4370) calvertengineering 12 inch x 12 inch

12 inch x 12 inch size

No-stud heater assembly for compatible Balboa M7 240V spa systems

Helps restore proper threaded feeder connection support

A complete unit like this is useful because it can restore the main skimming function in one step when the existing body and internal parts are no longer worth rebuilding individually

A union like this is useful because it provides a removable connection while also bridging threaded plumbing to flexible hose-style routing

Waterway Crystal Water Air Relief Assembly with Tube [325 sq. ft.] (550-4370) calvertengineering 12 inch x 12 inchThe Waterway 550 4370 Crystal Water air relief assembly with tube is designed for compatible 325 square foot applications. An assembly like this is useful because it helps restore the air relief function of the system, supporting proper release and serviceability where the original component has worn out or failed. Air relief components play an important role in filter maintenance and operation, and replacing them with the correct Waterway assembly