XS Scuba AC990 Second Stage Quick Disconnect – Upgrade Your Dive Setup with Fast Regulator Switchingt Sink or Swim Scuba, the XS Scuba AC900 Quick Disconnect is our go-to solution for adding flexibility and convenience to your regulator system. This high-quality quick disconnect fitting allows divers to effortlessly switch between a full face mask and a traditional second stage without tools or downtime.

Perfect for both recreational and public safety divers, the AC900 is a must-have accessory for any diver who values gear versatility and rapid configuration changes. Whether you're diving with a standard second stage one day and a full face mask the next, this quick disconnect fitting makes transitions smooth and secure.

We trust the XS Scuba AC990 on most of our regulator sets, and recommend it for divers who want a streamlined way to detach or swap second stages for service, storage, or switching configurations on the fly.

Key Features:

Designed for easy quick disconnect of second stage regulators

Enables rapid transitions between full face masks and standard second stages

Durable, corrosion-resistant construction built for long-term underwater use

Simple installation – works with most standard low-pressure regulator hoses

Ideal for divers who value efficiency, versatility, and professional-grade gear

Upgrade your regulator setup today with the XS Scuba AC990 Second Stage Quick Disconnect—the same quick-connect fitting trusted by our staff and public safety dive teams alike.

AC990 Second Stage Quick Disconnect