Balboa Union [1-1/2" MPT x 1-1/2" S - 2" Spg] (11-3540)

Type:	Fittings & Valves: Unions
Mfr	Balboa Water Group
Mfg Part #	11-3540
Hzn Part #	89-470-1060
Color:	White
Plumbing Size:	1-1/2" MPT x 1-1/2" Slip - 2" Spg

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TAGS: balboawater, pvcfittings, unions

Details

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SEE REPLACEMENT PART: OBSOLETE

A union fitting can make a complex plumbing connection cleaner and easier to service, and this Balboa Union is designed for compatible 1-1/2 inch MPT by 1-1/2 inch slip to 2 inch spigot applications where the original fitting has cracked, worn, or become unreliable. In spa plumbing, correctly matched unions help preserve serviceability while keeping the connection path feeling organized and dependable.

The mixed threaded, slip, and spigot relationship is what gives this fitting its practical value because it supports a more specific connection layout than a simpler union style. That matters because correct geometry and fit at a union point can make a major difference in how naturally the plumbing goes back together.

Focused plumbing fittings like this are especially useful when the rest of the system is still serviceable and the owner wants to restore the exact connection point that has become the weak link. That helps keep the repair efficient while improving the finished quality of the plumbing line.

Installed in the proper plumbing setup, this union helps restore a cleaner multi-format connection and supports a more dependable repair overall.

Union for compatible Balboa plumbing applications
1-1/2 inch MPT by 1-1/2 inch slip to 2 inch spigot layout supports intended fit
Helps restore a removable and serviceable plumbing connection
Useful when original unions are cracked or worn
Improves plumbing accuracy and repair confidence

Balboa Water Group – Spa Systems, Pumps, Heaters & Control Components

Who is Balboa Water Group?

Balboa Water Group is the world’s largest manufacturer of spa systems, components, and control technology, producing an estimated 70% of all hot tub systems globally. With decades of industry leadership, Balboa is the driving force behind many of the pumps, heaters, control packs, and circuit boards used by top spa brands. Known for innovation, reliability, and engineering excellence, Balboa has become the standard for spa system performance worldwide.

What products does Balboa Water Group specialize in?

Balboa specializes in complete spa system solutions, including control systems, topside panels, circuit boards, heaters, pumps, sensors, jets, and accessories. Their systems are designed to seamlessly integrate temperature control, water flow, filtration, and lighting. Balboa products are widely used in both new spa manufacturing and replacement parts, making them one of the most commonly sourced brands for hot tub repair and upgrades.

Why choose Balboa Water Group parts for your pool or spa?

Balboa parts are trusted for their compatibility, durability, and consistent performance across a wide range of spa systems. Because Balboa components are used in the majority of hot tubs on the market, finding compatible replacement parts is easier and more reliable. Their advanced control technology allows precise management of temperature, jet functions, and energy usage, helping extend equipment life while improving the overall spa experience.

How do you identify and choose the correct Balboa Water Group part?

To select the correct Balboa part, it’s important to match your existing system’s model number, circuit board type, heater configuration, and topside control compatibility. Checking labels on control packs and referencing wiring diagrams or product manuals ensures proper fit and function. Choosing the correct Balboa component helps maintain system efficiency, prevents compatibility issues, and ensures safe operation.

Need help finding the right Balboa Water Group part?

At Bath & Spa Parts Online, we carry a wide selection of Balboa Water Group pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support.