Balboa Circuit Board - Balboa BP501U HQ Universal Systems (59375) bathparts The CMP union is designed

The CMP union is designed for compatible plumbing and tubing applications where a 1-1/2 inch MPT to 1-1/2 inch barb serviceable connection is needed

Helps refresh the visible face of the jet opening

This type of component is especially useful when the installed system depends on a 3-output topside interface with a screen rather than a simpler non-display layout

Replacement is often needed when the original glass is cracked

Useful for pump-to-line size transitions

Balboa Circuit Board - Balboa BP501U HQ Universal Systems (59375) bathparts The CMP union is designedUniversal style control systems still depend on very specific board behavior to manage heaters, pumps, and user inputs correctly. This Balboa BP501U HQ Universal Systems board is designed to restore that control layer in compatible setups where the original board is no longer delivering the kind of reliability the spa needs. Homeowners usually notice the effects of a failing board before they know where the problem is. The spa may power up