Balboa HydroAir Top Draw 1/2" Air Stem Assembly – White, 1.75" OD (50-2208)

Restore precise air control to your spa with the Balboa [HAI] 1/2" Air Stem Assembly. This Top Draw air control stem is crafted for 1/2" plumbing and a 1.75" outside diameter, designed to fit standard HydroAir/Balboa manifolds. The smooth face and white finish provide a clean, unobtrusive look while delivering reliable air regulation for your jets.

The assembly includes an O-ring for a dependable seal, helping to prevent air and water leaks that can compromise bubble action and jet performance. Built by HydroAir, a name trusted by spa professionals, this stem is engineered for durability in humid, wet spa environments.

• Plumbing size: 1/2" with a 1.75" OD for easy replacement in common Balboa/HydroAir setups
• Top Draw design: Accessible, user-friendly control that maintains consistent air flow to all jets
• Finish: White, smooth-face appearance that blends seamlessly with most spa interiors
• Construction: Durable plastic housing built to withstand the moisture-rich spa environment
• Seal: Includes O-ring to ensure a tight, leak-free seal during operation

Why replace with this air stem?

Worn or damaged air stems can reduce bubble output, create leaks, and hinder the spa’s air balance. This Balboa air stem replacement restores full air draw to your jets, reviving the signature HydroAir bubble experience and ensuring consistent performance across your spa system.

Ideal for

Spa owners maintaining Balboa HydroAir installations, technicians performing quick components replacement, and DIY enthusiasts replacing aging parts to keep their jets delivering optimal performance.

Installation & maintenance tips

Power down the spa before any replacement. Remove the old stem, verify the seating O-ring is intact, and install the new stem so the O-ring seats properly for a watertight seal. Hand-tighten to avoid cross-threading, and periodical checks will help you catch wear before leaks develop.