Adabuing 2-inch Spa Heater Split Nut Union Kit – 2 Pack with Screws & Gaskets (Balboa/Gecko Compatible)

Overview

Elevate spa heater maintenance with the Adabuing 2-inch Heater Split Nut Union Kit. This practical set is designed to refresh worn joints and provide a dependable seal, helping you manage routine spa care with confidence. Each kit delivers essential hardware in a compact, ready-to-install package, making it a versatile option for common 2-inch heater configurations.

The package includes two 2-inch heater split nuts, four screws, and two gaskets. Sized to fit standard 2-inch heater tubes and unions, it offers flexible compatibility across multiple heater systems, while keeping installation straightforward for both DIY and professional service scenarios.

Key specifications

• Split nut inner diameter: 2.3 in; outer diameter: 2.9 in
• O-ring inner diameter: 2.08 in; outer diameter: 2.87 in
• Designed for use with 2-inch heater tubes and unions

What’s included

• 2 × 2-inch heater split nuts
• 4 × screws
• 2 × gaskets

Compatibility and fit

• O-ring compatible with Balboa, Gecko, HydroQuip, Spa Builders, Correctech, Spanet systems
• Suitable for most 15-inch spa heaters
• Not compatible with Coleman Saluspa, LX heaters, or inflatable hot tubs

Installation tips

Attach the split nut to the heater tube with the two screws, then thread onto the heater’s threaded union with a gasket positioned between the union and tube. Tighten securely, but avoid over-torquing.

Practical use scenarios

Keep a spare kit on hand for seasonal maintenance, mid-season repairs, or emergency fixes to minimize downtime and keep your spa ready for enjoyable sessions.