The AquaCal AutoPilot manifold union is designed for compatible chlorine generator plumbing applications where a serviceable connection is needed between differing pipe sizes. A union like this is useful because it helps create a removable joint that simplifies future maintenance while supporting a cleaner plumbing transition at the equipment pad.This 2 inch by 1-1/2 inch version is especially useful when the original union is cracked, leaking, or worn, or when the system requires the correct size transition at the manifold connection. Using the proper union helps restore both serviceability and cleaner overall fit.The 19070 is a practical replacement for compatible AquaCal AutoPilot systems that need renewed manifold connection support and dependable plumbing transition. AquaCal AutoPilot manifold union 2 inch x 1-1/2 inch size transition Helps create a serviceable plumbing connection Useful when the original union is leaking or damaged Supports cleaner and more dependable manifold fitment