Balboa 1/2" Slimline Air Control Under Skirt Sterling Silver (25015-SS)

Authentic Balboa Slimline air control in a 1/2" size with an elegant Sterling Silver finish. Designed for under-skirt installation, this specific valve is part of Balboa’s legacy Slimline line, offering precise air management for each spa jet. Note: this item is obsolete and Balboa Water Group no longer provides a direct replacement. If you’re maintaining or restoring an older spa that used the 1/2" Slimline air control, this Sterling Silver model (25015-SS) remains the genuine part for compatible systems.

What this air control does

• Adjusts the air mixture going to each jet, letting you dial in the perfect hydromassage feel—from dense bubbles to a lighter breeze of air.
• Allows you to regulate, divert, or completely shut off air flow, giving you granular control over your spa’s jet experience.
• Designed to work with Balboa’s wide range of valve configurations and finishes—including metal or plastic control caps and dozens of color options—to match your spa’s interior and hardware.
• Under-skirt installation keeps the control discreet while preserving easy access for maintenance and adjustments.

Why this model stands out

• Original 1/2" Slimline design: compact, reliable, and compatible with many Balboa control systems that were popular in premium spas.
• Sterling Silver finish: a refined metallic look that coordinates with high-end spa hardware and trim pieces.
• Heritage and reliability: from Balboa Water Group, a long-standing global supplier known for durable pumps, jets, and control systems.
• Extensive configurability: pairs with multiple valve configurations and control cap styles, making it easier to restore or customize an existing spa setup without guessing at fittings.

Ideal use cases

Best suited for technicians and homeowners working on older Balboa spas that used the 1/2" Slimline air control under the skirt. It’s a practical choice when restoring authenticity to a classic spa interior or when matching a Sterling Silver hardware theme for a cohesive look. Use it to recreate the original jet air dynamics, ensuring the same bubbles, flow, and feel your spa delivered when it was new.

Who should consider this part

• Owners of older Balboa spa models that relied on Slimline 1/2" air controls.
• Spa technicians performing maintenance or restorations on Balboa systems seeking authentic, original components.
• Anyone aiming to preserve a Sterling Silver aesthetic across spa controls and trim while maintaining the authentic operating feel of the jets.

Practical guidance for replacement and care

• Since this model is obsolete and no direct Balboa replacement exists, confirm compatibility with your existing Balboa control system before purchase. If you’re unsure, reach out to Balboa support or our team for guidance.
• Installation requires standard 1/2" line connections and appropriate under-skirt mounting hardware. Follow your spa’s service manual for gasket seating and leak prevention.
• Avoid harsh chemicals near the valve assembly; clean with mild, non-abrasive cleaners and dry thoroughly to prevent corrosion on metal components.
• Keep a spare period of time for re-balancing jet air flow after installation to restore the intended massage experience.

Support and next steps

If you’re trying to identify the right replacement or reconnect a legacy Balboa system, our team can help. Call 800-918-9143 during normal business hours, chat, or email us for guidance on compatibility and installation considerations for the 25015-SS under-skirt air control.

Obsolete - NO replacement from Balboa Water Group

Balboa 1/2" Slimline Jet Air Control [Under Skirt] [Sterling Silver] (25015-SS)

Take control of the way you relax with Balboa's air control line. Air control valves allow users to adjust the air mixture to each jet. You control how the air is regulated, diverted, or it can be simply shut off. Combined with the many different type of valve configurations, different styles of metal or plastic control caps, and dozens of colors to choose from, Balboa has literally hundreds of styles and looks to choose from to complement anyones bath or hot tub (spa) experience. If you need assistance in finding the right replacement products, give us a call at 800-918-9143 today! We can also be reached via chat or e-mail during normal business hours.